999112120011 has 40 divisors (see below), whose sum is σ = 1522743647040. Its totient is φ = 652651534512.

The previous prime is 999112119917. The next prime is 999112120031. The reversal of 999112120011 is 110021211999.

It is not a de Polignac number, because 999112120011 - 2²⁶ = 999045011147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (999112120031) by changing a digit.

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 39 ways as a sum of consecutive naturals, for example, 1126660 + ... + 1807646.

It is an arithmetic number, because the mean of its divisors is an integer number (38068591176).

Almost surely, 2^999112120011 is an apocalyptic number.

999112120011 is a deficient number, since it is larger than the sum of its proper divisors (523631527029).

999112120011 is a wasteful number, since it uses less digits than its factorization.

999112120011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681365 (or 681356 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 36.

The spelling of 999112120011 in words is "nine hundred ninety-nine billion, one hundred twelve million, one hundred twenty thousand, eleven".