22111312012 has 12 divisors (see below), whose sum is σ = 39129569640. Its totient is φ = 10931434976.

The previous prime is 22111312007. The next prime is 22111312063. The reversal of 22111312012 is 21021311122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31054858 + ... + 31055569.

It is an arithmetic number, because the mean of its divisors is an integer number (3260797470).

Almost surely, 2^22111312012 is an apocalyptic number.

It is an amenable number.

22111312012 is a deficient number, since it is larger than the sum of its proper divisors (17018257628).

22111312012 is a wasteful number, since it uses less digits than its factorization.

22111312012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62110520 (or 62110518 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 22111312012 its reverse (21021311122), we get a palindrome (43132623134).

The spelling of 22111312012 in words is "twenty-two billion, one hundred eleven million, three hundred twelve thousand, twelve".