12117666911 has 32 divisors (see below), whose sum is σ = 14421590016. Its totient is φ = 9963324000.

The previous prime is 12117666887. The next prime is 12117666919. The reversal of 12117666911 is 11966671121.

It is not a de Polignac number, because 12117666911 - 2²² = 12113472607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12117666919) 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, 17536076 + ... + 17536766.

It is an arithmetic number, because the mean of its divisors is an integer number (450674688).

Almost surely, 2^12117666911 is an apocalyptic number.

12117666911 is a deficient number, since it is larger than the sum of its proper divisors (2303923105).

12117666911 is a wasteful number, since it uses less digits than its factorization.

12117666911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1323.

The product of its digits is 27216, while the sum is 41.

The spelling of 12117666911 in words is "twelve billion, one hundred seventeen million, six hundred sixty-six thousand, nine hundred eleven".