22021211012 has 12 divisors (see below), whose sum is σ = 38543138256. Its totient is φ = 11008885800.

The previous prime is 22021210979. The next prime is 22021211029. The reversal of 22021211012 is 21011212022.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400898 + ... + 452505.

It is an arithmetic number, because the mean of its divisors is an integer number (3211928188).

Almost surely, 2^22021211012 is an apocalyptic number.

It is an amenable number.

22021211012 is a deficient number, since it is larger than the sum of its proper divisors (16521927244).

22021211012 is a wasteful number, since it uses less digits than its factorization.

22021211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 859858 (or 859856 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22021211012 its reverse (21011212022), we get a palindrome (43032423034).

The spelling of 22021211012 in words is "twenty-two billion, twenty-one million, two hundred eleven thousand, twelve".