22012100112 has 40 divisors (see below), whose sum is σ = 57007877056. Its totient is φ = 7318878336.

The previous prime is 22012100111. The next prime is 22012100119. The reversal of 22012100112 is 21100121022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (22012100111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 558508 + ... + 596619.

Almost surely, 2^22012100112 is an apocalyptic number.

It is an amenable number.

22012100112 is an abundant number, since it is smaller than the sum of its proper divisors (34995776944).

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

22012100112 is a wasteful number, since it uses less digits than its factorization.

22012100112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1155535 (or 1155529 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22012100112 its reverse (21100121022), we get a palindrome (43112221134).

The spelling of 22012100112 in words is "twenty-two billion, twelve million, one hundred thousand, one hundred twelve".