22100212012212 has 144 divisors (see below), whose sum is σ = 56732895819600. Its totient is φ = 7253378150400.

The previous prime is 22100212012199. The next prime is 22100212012231. The reversal of 22100212012212 is 21221021200122.

It is a happy number.

22100212012212 is a `hidden beast` number, since 221 + 0 + 0 + 21 + 201 + 221 + 2 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2167237399716 + 19932974612496 = 1472154^2 + 4464636^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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, 271630914 + ... + 271712262.

Almost surely, 2^{22100212012212} is an apocalyptic number.

It is an amenable number.

22100212012212 is an abundant number, since it is smaller than the sum of its proper divisors (34632683807388).

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

22100212012212 is a wasteful number, since it uses less digits than its factorization.

22100212012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81954 (or 81949 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22100212012212 its reverse (21221021200122), we get a palindrome (43321233212334).

The spelling of 22100212012212 in words is "twenty-two trillion, one hundred billion, two hundred twelve million, twelve thousand, two hundred twelve".