Presence of mind : Not a Maths Number sequence Puzzle

Puzzle of the Day 2046 : Presence of mind : Not a Maths Number sequence Puzzle

Mind it that this puzzle does not have any mathematical patterned answer to it. It is just plain and simple presence of mind thinking laterally. You don’t even need to know maths to answer. Just apply your brain to it. Now this is a huge hint. You will appreciate the answer

What is the next number in this sequence?
1, 11, 21, 1211, 111221, ???