Japanese西山宏太朗 is on Twitter (X) as @Koutarotaro, with 542,811 followers and 16,673 posts. A typical post draws 1.1K interactions, an engagement rate of 0.193% per follower. It has been on X since April 2012, an account age of 14 years.
Engagement
A typical post picks up 1.1K interactions against 543K followers, an engagement rate of 0.193%. Measured over 12 original posts, its engagement rate beats 81% of 20,444 tracked accounts of a similar size. Comparing inside a size band matters here: engagement rate falls as accounts grow, so a raw rate would mostly just re-measure the follower count. Posts are seen about 63K times each, and 1.67% of those impressions turn into an interaction. That is about 11.6% of the follower count, which is the gap between an audience on paper and an audience in a timeline.
Measured over 12 original posts from a 30-day window, last computed on October 14, 2026. Recurring tags: #西山宏太朗, #たろ森, #伊東健人.
Full engagement reportFollower growth
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Bio
81プロデュース、声優の西山宏太朗 〜かりあげを愛する〜 です！ @koutarotaroInfo ♬
Notable followers
The biggest accounts in our directory following @Koutarotaro.
西山宏太朗 on Twitter (X) - frequently asked questions
- What is the Twitter handle for 西山宏太朗?
- 西山宏太朗 posts on Twitter (X) as @Koutarotaro. The profile is at x.com/Koutarotaro, and the View on X button at the top of this page opens it.
- How many followers does 西山宏太朗 have on Twitter?
- 西山宏太朗 (@Koutarotaro) has 542,811 followers on Twitter (X). The count is refreshed continuously from public data.
- When did 西山宏太朗 join Twitter?
- 西山宏太朗 joined Twitter (X) in April 2012. The @Koutarotaro account is 14 years old. Searches for 西山宏太朗 age often mean a personal age, which we do not publish. The figure here is the account age only.