12122211185 has 24 divisors (see below), whose sum is σ = 17812235520. Its totient is φ = 7874877024.

The previous prime is 12122211163. The next prime is 12122211187. The reversal of 12122211185 is 58111222121.

It is not a de Polignac number, because 12122211185 - 2²² = 12118016881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12122211187) 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, 1297409 + ... + 1306718.

It is an arithmetic number, because the mean of its divisors is an integer number (742176480).

Almost surely, 2^12122211185 is an apocalyptic number.

It is an amenable number.

12122211185 is a deficient number, since it is larger than the sum of its proper divisors (5690024335).

12122211185 is a wasteful number, since it uses less digits than its factorization.

12122211185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2604165 (or 2604158 counting only the distinct ones).

The product of its digits is 640, while the sum is 26.

The spelling of 12122211185 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eighty-five".