Megastar Amitabh Bachchan has scored 22 million followers on Twitter, retaining his position of the most followed Indian actor on the micro-blogging site.The 73-year-old actor is ahead of superstars like Shah Rukh Khan (20.8 million), Salman Khan (19 million), Aamir Khan (18.3 million), and Bollywood stars Deepika Padukone and Priyanka Chopra, who have 15.6 million and 14.8 million followers respectively.Amitabh Bachchan, who joined Twitter in 2010, expressed his excitement through a post and shared the news along with a picture of himself in which he is seen joining hands and greeting his followers for all the love.‘BAAADUUUUMMMBAAAA! Twitter followers reaches 22 million #AB22Million.. Thank you all.. Your love made it,’ wrote the actor.From sharing posters, behind-the-scene stills of his movies, trivia of his old films to voicing his opinion on a range of issues, Bachchan is quite active on Twitter.The National Award-winning actor is also active on other social media platforms, Facebook and blog. Lately Amitabh Bachchan has been one of the personalities from Bollywood who have been using his Twitter account to perpetually encourage the athletes at Rio Olympics 2016.Recently Amitabh Bachchan on joined the nation in lauding ace Indian shuttler P.V Sindhu who reached the semi-finals of the women’s singles event at the Rio Olympics.If you’re missing out on the recent sports events, maybe Amitabh Bachchan twitter account will give you a brief account of everything that’s going on in Rio.