22200021012 has 48 divisors (see below), whose sum is σ = 56359806272. Its totient is φ = 6760350720.

The previous prime is 22200020993. The next prime is 22200021017. The reversal of 22200021012 is 21012000222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22200021017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 718414 + ... + 748677.

Almost surely, 2^22200021012 is an apocalyptic number.

It is an amenable number.

22200021012 is an abundant number, since it is smaller than the sum of its proper divisors (34159785260).

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

22200021012 is a wasteful number, since it uses less digits than its factorization.

22200021012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467208 (or 1467206 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22200021012 its reverse (21012000222), we get a palindrome (43212021234).

It can be divided in two parts, 222000210 and 12, that added together give a palindrome (222000222).

The spelling of 22200021012 in words is "twenty-two billion, two hundred million, twenty-one thousand, twelve".