12111011100999 has 24 divisors (see below), whose sum is σ = 17529982189200. Its totient is φ = 8057255055360.

The previous prime is 12111011100949. The next prime is 12111011101003. The reversal of 12111011100999 is 99900111011121.

It is not a de Polignac number, because 12111011100999 - 2⁷ = 12111011100871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111011100949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 218310637 + ... + 218366105.

It is an arithmetic number, because the mean of its divisors is an integer number (730415924550).

Almost surely, 2^{12111011100999} is an apocalyptic number.

12111011100999 is a deficient number, since it is larger than the sum of its proper divisors (5418971088201).

12111011100999 is a wasteful number, since it uses less digits than its factorization.

12111011100999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105375 (or 105372 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 36.

The spelling of 12111011100999 in words is "twelve trillion, one hundred eleven billion, eleven million, one hundred thousand, nine hundred ninety-nine".