22212100122012 has 72 divisors (see below), whose sum is σ = 56418706627920. Its totient is φ = 7368243966720.

The previous prime is 22212100122007. The next prime is 22212100122061. The reversal of 22212100122012 is 21022100121222.

It is a happy number.

22212100122012 is a `hidden beast` number, since 2 + 221 + 210 + 0 + 1 + 220 + 12 = 666.

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 23 ways as a sum of consecutive naturals, for example, 83217664 + ... + 83484152.

It is an arithmetic number, because the mean of its divisors is an integer number (783593147610).

Almost surely, 2^{22212100122012} is an apocalyptic number.

It is an amenable number.

22212100122012 is an abundant number, since it is smaller than the sum of its proper divisors (34206606505908).

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

22212100122012 is a wasteful number, since it uses less digits than its factorization.

22212100122012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277683 (or 277678 counting only the distinct ones).

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

Adding to 22212100122012 its reverse (21022100121222), we get a palindrome (43234200243234).

The spelling of 22212100122012 in words is "twenty-two trillion, two hundred twelve billion, one hundred million, one hundred twenty-two thousand, twelve".