JapaneseBT21 is on Twitter (X) as @BT21_, with 12,592,992 followers and 3,168 posts. It lost 1,735 followers in the last 7 days and 7,114 in the last 30 days. It has been on X since August 2017, an account age of 9 years.
Insights
BT21 ranks #301 of 25,356,832 tracked X (Twitter) accounts. That is the top 0.01% by followers. Over the last 30 days @BT21_ lost 7,114 followers (-0.06%). In the last 7 days the change was -1,735 followers. Its strongest tracked day added +1,744 followers on Oct 5, 2026.
Engagement
Early reading. We have captured 7 original posts for this account, below the 8 we require before treating a median as settled. The numbers above describe what we have seen so far, not a finished profile of the account.
A typical post picks up 11K interactions against 13M followers, an engagement rate of 0.084%. Posts are seen about 184K times each, and 5.75% of those impressions turn into an interaction. That is about 1.46% of the follower count, which is the gap between an audience on paper and an audience in a timeline. Posting runs at about 0.27 posts a day over the last 30 days, though only 23% of days saw any activity at all.
Measured over 7 original posts from a 30-day window, last computed on October 27, 2026. Recurring tags: #bt21, #cooky, #rj.
Full engagement reportFollower growth
Best tracked day: +1.7K followers on 2026-10-05.
Buy or sell Twitter (X) accounts - escrow-protected
PlayerSells is an escrow marketplace for Twitter (X) accounts. Every deal is protected, with no middleman risk.
Check @BT21_ with free tools
The same checks work on any X (Twitter) account. Free, no sign-up and no email.
Creator Rank, our free Chrome extension, shows this account's audience rank and Creator Score next to its name on X itself.
Bio
Created by BTS! #BT21
Notable followers
The biggest accounts in our directory following @BT21_.
Similar accounts
BT21 on Twitter (X) - frequently asked questions
- What is the Twitter handle for BT21?
- BT21 posts on Twitter (X) as @BT21_. The profile is at x.com/BT21_, and the View on X button at the top of this page opens it.
- How many followers does BT21 have on Twitter?
- BT21 (@BT21_) has 12,592,992 followers on Twitter (X). It lost 1,735 followers in the last 7 days and 7,114 in the last 30 days. The count is refreshed continuously from public data.
- When did BT21 join Twitter?
- BT21 joined Twitter (X) in August 2017. The @BT21_ account is 9 years old. Searches for BT21 age often mean a personal age, which we do not publish. The figure here is the account age only.