22021211012200 has 96 divisors (see below), whose sum is σ = 52681831506360. Its totient is φ = 8556718976000.

The previous prime is 22021211012179. The next prime is 22021211012221. The reversal of 22021211012200 is 221011212022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22021211012179) and next prime (22021211012221).

It can be written as a sum of positive squares in 12 ways, for example, as 16124288436036 + 5896922576164 = 4015506^2 + 2428358^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9213919 + ... + 11355118.

Almost surely, 2^{22021211012200} is an apocalyptic number.

22021211012200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021211012200 is an abundant number, since it is smaller than the sum of its proper divisors (30660620494160).

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

22021211012200 is a wasteful number, since it uses less digits than its factorization.

22021211012200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20569207 (or 20569198 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021211012200 its reverse (221011212022), we get a palindrome (22242222224222).

The spelling of 22021211012200 in words is "twenty-two trillion, twenty-one billion, two hundred eleven million, twelve thousand, two hundred".