21970900907912 has 16 divisors (see below), whose sum is σ = 44940479130000. Its totient is φ = 9986773139920.

The previous prime is 21970900907909. The next prime is 21970900907927.

21970900907912 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124834664162 + ... + 124834664337.

It is an arithmetic number, because the mean of its divisors is an integer number (2808779945625).

Almost surely, 2^{21970900907912} is an apocalyptic number.

21970900907912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21970900907912 is an abundant number, since it is smaller than the sum of its proper divisors (22969578222088).

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

21970900907912 is a wasteful number, since it uses less digits than its factorization.

21970900907912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249669328516 (or 249669328512 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 56.

The spelling of 21970900907912 in words is "twenty-one trillion, nine hundred seventy billion, nine hundred million, nine hundred seven thousand, nine hundred twelve".