22031312012 has 12 divisors (see below), whose sum is σ = 39208267560. Its totient is φ = 10828949856.

The previous prime is 22031311903. The next prime is 22031312021. The reversal of 22031312012 is 21021313022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46676273 + ... + 46676744.

It is an arithmetic number, because the mean of its divisors is an integer number (3267355630).

Almost surely, 2^22031312012 is an apocalyptic number.

It is an amenable number.

22031312012 is a deficient number, since it is larger than the sum of its proper divisors (17176955548).

22031312012 is a wasteful number, since it uses less digits than its factorization.

22031312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93353080 (or 93353078 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 22031312012 its reverse (21021313022), we get a palindrome (43052625034).

The spelling of 22031312012 in words is "twenty-two billion, thirty-one million, three hundred twelve thousand, twelve".