999912001011 has 32 divisors (see below), whose sum is σ = 1662329184768. Its totient is φ = 519391741440.

The previous prime is 999912000979. The next prime is 999912001027. The reversal of 999912001011 is 110100219999.

It is not a de Polignac number, because 999912001011 - 2⁵ = 999912000979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999912001211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2713621 + ... + 3059993.

It is an arithmetic number, because the mean of its divisors is an integer number (51947787024).

Almost surely, 2^999912001011 is an apocalyptic number.

999912001011 is a deficient number, since it is larger than the sum of its proper divisors (662417183757).

999912001011 is a wasteful number, since it uses less digits than its factorization.

999912001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358891.

The product of its (nonzero) digits is 13122, while the sum is 42.

The spelling of 999912001011 in words is "nine hundred ninety-nine billion, nine hundred twelve million, one thousand, eleven".