22122211112 has 32 divisors (see below), whose sum is σ = 44448264000. Its totient is φ = 10285019904.

The previous prime is 22122211099. The next prime is 22122211123. The reversal of 22122211112 is 21111222122.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 968612 + ... + 991187.

It is an arithmetic number, because the mean of its divisors is an integer number (1389008250).

Almost surely, 2^22122211112 is an apocalyptic number.

It is an amenable number.

22122211112 is an abundant number, since it is smaller than the sum of its proper divisors (22326052888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22122211112 is a wasteful number, since it uses less digits than its factorization.

22122211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1959905 (or 1959901 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 22122211112 its reverse (21111222122), we get a palindrome (43233433234).

The spelling of 22122211112 in words is "twenty-two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twelve".