The 72-year-old took to micro-blogging website Twitter, on which he has over 15 million followers, to share the news.
He wrote: “T 1900 – FaceBook 21 MILLION…!! Thank you all.. aiming for 30 MILLION now!! and then more..!! YEAAAAHHHHHHHH!! BAAADOOOMBA!!”
Amitabh’s Facebook page on Wednesday had 21,009,374 likes.
Meanwhile, on the professional front, the ‘Shahenshah of Bollywood’ is prepping for “Wazir”, which also stars Farhan Akhtar. (IANS)