990209011012 has 24 divisors (see below), whose sum is σ = 1866192524672. Its totient is φ = 457012346400.

The previous prime is 990209010997. The next prime is 990209011039. The reversal of 990209011012 is 210110902099.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4642837 + ... + 4851427.

Almost surely, 2^990209011012 is an apocalyptic number.

It is an amenable number.

990209011012 is a deficient number, since it is larger than the sum of its proper divisors (875983513660).

990209011012 is a wasteful number, since it uses less digits than its factorization.

990209011012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299899 (or 299897 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 34.

The spelling of 990209011012 in words is "nine hundred ninety billion, two hundred nine million, eleven thousand, twelve".