22100211212100 has 144 divisors (see below), whose sum is σ = 75435387826176. Its totient is φ = 4888525968000.

The previous prime is 22100211212099. The next prime is 22100211212147. The reversal of 22100211212100 is 121211200122.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 22100211212100.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169675386 + ... + 169805585.

It is an arithmetic number, because the mean of its divisors is an integer number (523856859904).

Almost surely, 2^{22100211212100} is an apocalyptic number.

22100211212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22100211212100 is an abundant number, since it is smaller than the sum of its proper divisors (53335176614076).

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

22100211212100 is a wasteful number, since it uses less digits than its factorization.

22100211212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339481026 (or 339481019 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22100211212100 its reverse (121211200122), we get a palindrome (22221422412222).

The spelling of 22100211212100 in words is "twenty-two trillion, one hundred billion, two hundred eleven million, two hundred twelve thousand, one hundred".