12220000021100 has 36 divisors (see below), whose sum is σ = 26517569043000. Its totient is φ = 4887968856960.

The previous prime is 12220000021081. The next prime is 12220000021121. The reversal of 12220000021100 is 112000002221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21504431 + ... + 22065369.

Almost surely, 2^{12220000021100} is an apocalyptic number.

12220000021100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12220000021100 is an abundant number, since it is smaller than the sum of its proper divisors (14297569021900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12220000021100 is a wasteful number, since it uses less digits than its factorization.

12220000021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 778802 (or 778795 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 12220000021100 its reverse (112000002221), we get a palindrome (12332000023321).

The spelling of 12220000021100 in words is "twelve trillion, two hundred twenty billion, twenty-one thousand, one hundred".