990012021112 has 64 divisors (see below), whose sum is σ = 1976704884000. Its totient is φ = 463509651456.

The previous prime is 990012021109. The next prime is 990012021143. The reversal of 990012021112 is 211120210099.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11294478 + ... + 11381794.

Almost surely, 2^990012021112 is an apocalyptic number.

It is an amenable number.

990012021112 is a deficient number, since it is larger than the sum of its proper divisors (986692862888).

990012021112 is a wasteful number, since it uses less digits than its factorization.

990012021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88208 (or 88204 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The spelling of 990012021112 in words is "nine hundred ninety billion, twelve million, twenty-one thousand, one hundred twelve".