Questions

 It is a strange sequence. Each number describes the resemblance of the previous one, except the first one.

11 describes the previous '1' which contains one '1'

21 describes the previous '11' which contains two '1'

1211 describes the previous '21' which contains one '2' and one '1'

111221 describes the previous '1211' which contains one '1', one '2' and two '1'.

So the next sequence will be 312211, that is the previous '111221' contains three '1', two '2' and one '1'.

The title of Father of the Nation was given to Mohan Das Karamchand Gandhi known as Mahathma Gandhi by Netaji Subhas Chandra Bose.

He was the first who addressed Mahatma Gandhi as Father of the Nation on Singapore Radio on July 6, 1944.