22200021000 has 128 divisors (see below), whose sum is σ = 76960166400. Its totient is φ = 5919998400.

The previous prime is 22200020993. The next prime is 22200021017. The reversal of 22200021000 is 12000222.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 384112 + ... + 438111.

It is an arithmetic number, because the mean of its divisors is an integer number (601251300).

Almost surely, 2^22200021000 is an apocalyptic number.

22200021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22200021000 is an abundant number, since it is smaller than the sum of its proper divisors (54760145400).

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

22200021000 is a wasteful number, since it uses less digits than its factorization.

22200021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822253 (or 822233 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22200021000 its reverse (12000222), we get a palindrome (22212021222).

The spelling of 22200021000 in words is "twenty-two billion, two hundred million, twenty-one thousand".