It is a happy number.
It is a semiprime because it is the product of two primes.
It is a congruent number.
It is an unprimeable number.
Almost surely, 220011220102 is an apocalyptic number.
20011220102 is a wasteful number, since it uses less digits than its factorization.
20011220102 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10005610053.
Adding to 20011220102 its reverse (20102211002), we get a palindrome (40113431104).
The spelling of 20011220102 in words is "twenty billion, eleven million, two hundred twenty thousand, one hundred two".