9000000012 has 48 divisors (see below), whose sum is σ = 21857552640. Its totient is φ = 2878763328.

The previous prime is 9000000001. The next prime is 9000000043. The reversal of 9000000012 is 2100000009.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22608 + ... + 136055.

It is an arithmetic number, because the mean of its divisors is an integer number (455365680).

Almost surely, 2^9000000012 is an apocalyptic number.

It is an amenable number.

9000000012 is an abundant number, since it is smaller than the sum of its proper divisors (12857552628).

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

9000000012 is a wasteful number, since it uses less digits than its factorization.

9000000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158862 (or 158860 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 9000000012 is about 94868.3298682969. The cubic root of 9000000012 is about 2080.0838239764.

The spelling of 9000000012 in words is "nine billion, twelve", and thus it is an aban number and an uban number.