22122211012 has 12 divisors (see below), whose sum is σ = 42233312016. Its totient is φ = 10055550440.

The previous prime is 22122210997. The next prime is 22122211021. The reversal of 22122211012 is 21011222122.

It is a happy number.

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, 251388718 + ... + 251388805.

It is an arithmetic number, because the mean of its divisors is an integer number (3519442668).

Almost surely, 2^22122211012 is an apocalyptic number.

22122211012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22122211012 is a deficient number, since it is larger than the sum of its proper divisors (20111101004).

22122211012 is a wasteful number, since it uses less digits than its factorization.

22122211012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502777538 (or 502777536 counting only the distinct ones).

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

Adding to 22122211012 its reverse (21011222122), we get a palindrome (43133433134).

It can be divided in two parts, 221222110 and 12, that added together give a palindrome (221222122).

The spelling of 22122211012 in words is "twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, twelve".