12122211187 has 2 divisors, whose sum is σ = 12122211188. Its totient is φ = 12122211186.

The previous prime is 12122211163. The next prime is 12122211217. The reversal of 12122211187 is 78111222121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12122211187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12122211137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061105593 + 6061105594.

It is an arithmetic number, because the mean of its divisors is an integer number (6061105594).

Almost surely, 2^12122211187 is an apocalyptic number.

12122211187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122211187 is an equidigital number, since it uses as much as digits as its factorization.

12122211187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 896, while the sum is 28.

The spelling of 12122211187 in words is "twelve billion, one hundred twenty-two million, two hundred eleven thousand, one hundred eighty-seven".