212012112000021 has 16 divisors (see below), whose sum is σ = 288089626406400. Its totient is φ = 138648262401008.

The previous prime is 212012112000001. The next prime is 212012112000151. The reversal of 212012112000021 is 120000211210212.

212012112000021 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212012112000021 - 2²² = 212012107805717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212012112000001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1282367601 + ... + 1282532918.

It is an arithmetic number, because the mean of its divisors is an integer number (18005601650400).

Almost surely, 2^{212012112000021} is an apocalyptic number.

It is an amenable number.

212012112000021 is a deficient number, since it is larger than the sum of its proper divisors (76077514406379).

212012112000021 is a wasteful number, since it uses less digits than its factorization.

212012112000021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2564901048.

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

Adding to 212012112000021 its reverse (120000211210212), we get a palindrome (332012323210233).

The spelling of 212012112000021 in words is "two hundred twelve trillion, twelve billion, one hundred twelve million, twenty-one", and thus it is an aban number.