22111210012100 has 72 divisors (see below), whose sum is σ = 54031756912896. Its totient is φ = 7781070960000.

The previous prime is 22111210012097. The next prime is 22111210012139. The reversal of 22111210012100 is 121001211122.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324177191 + ... + 324245390.

Almost surely, 2^{22111210012100} is an apocalyptic number.

22111210012100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111210012100 is an abundant number, since it is smaller than the sum of its proper divisors (31920546900796).

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

22111210012100 is a wasteful number, since it uses less digits than its factorization.

22111210012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648422637 (or 648422630 counting only the distinct ones).

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

Adding to 22111210012100 its reverse (121001211122), we get a palindrome (22232211223222).

The spelling of 22111210012100 in words is "twenty-two trillion, one hundred eleven billion, two hundred ten million, twelve thousand, one hundred".