22111112012 has 12 divisors (see below), whose sum is σ = 42212123016. Its totient is φ = 10050505440.

The previous prime is 22111111969. The next prime is 22111112039. The reversal of 22111112012 is 21021111122.

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, 251262593 + ... + 251262680.

It is an arithmetic number, because the mean of its divisors is an integer number (3517676918).

Almost surely, 2^22111112012 is an apocalyptic number.

22111112012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22111112012 is a deficient number, since it is larger than the sum of its proper divisors (20101011004).

22111112012 is a wasteful number, since it uses less digits than its factorization.

22111112012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502525288 (or 502525286 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 22111112012 its reverse (21021111122), we get a palindrome (43132223134).

The spelling of 22111112012 in words is "twenty-two billion, one hundred eleven million, one hundred twelve thousand, twelve".