9990001212112 has 20 divisors (see below), whose sum is σ = 19805758218400. Its totient is φ = 4878837800928.

The previous prime is 9990001212043. The next prime is 9990001212173. The reversal of 9990001212112 is 2112121000999.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7260174612 + ... + 7260175987.

It is an arithmetic number, because the mean of its divisors is an integer number (990287910920).

Almost surely, 2^{9990001212112} is an apocalyptic number.

It is an amenable number.

9990001212112 is a deficient number, since it is larger than the sum of its proper divisors (9815757006288).

9990001212112 is a wasteful number, since it uses less digits than its factorization.

9990001212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14520350650 (or 14520350644 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 37.

The spelling of 9990001212112 in words is "nine trillion, nine hundred ninety billion, one million, two hundred twelve thousand, one hundred twelve".