12116642181 has 16 divisors (see below), whose sum is σ = 18468077568. Its totient is φ = 6922062000.

The previous prime is 12116642179. The next prime is 12116642207. The reversal of 12116642181 is 18124661121.

It is not a de Polignac number, because 12116642181 - 2¹ = 12116642179 is a prime.

It is a super-2 number, since 2×12116642181² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12116640181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16156 + ... + 156506.

It is an arithmetic number, because the mean of its divisors is an integer number (1154254848).

Almost surely, 2^12116642181 is an apocalyptic number.

It is an amenable number.

12116642181 is a deficient number, since it is larger than the sum of its proper divisors (6351435387).

12116642181 is a wasteful number, since it uses less digits than its factorization.

12116642181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144472.

The product of its digits is 4608, while the sum is 33.

The spelling of 12116642181 in words is "twelve billion, one hundred sixteen million, six hundred forty-two thousand, one hundred eighty-one".