900120012012 has 72 divisors (see below), whose sum is σ = 2455141350480. Its totient is φ = 276415804800.

The previous prime is 900120011993. The next prime is 900120012019. The reversal of 900120012012 is 210210021009.

900120012012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (900120012019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1651114 + ... + 2127537.

Almost surely, 2^900120012012 is an apocalyptic number.

It is an amenable number.

900120012012 is an abundant number, since it is smaller than the sum of its proper divisors (1555021338468).

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

900120012012 is a wasteful number, since it uses less digits than its factorization.

900120012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779183 (or 3779178 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The spelling of 900120012012 in words is "nine hundred billion, one hundred twenty million, twelve thousand, twelve".