12231213187 has 2 divisors, whose sum is σ = 12231213188. Its totient is φ = 12231213186.

The previous prime is 12231213179. The next prime is 12231213233. The reversal of 12231213187 is 78131213221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12231213187 - 2³ = 12231213179 is a prime.

It is not a weakly prime, because it can be changed into another prime (12231213287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115606593 + 6115606594.

It is an arithmetic number, because the mean of its divisors is an integer number (6115606594).

Almost surely, 2^12231213187 is an apocalyptic number.

12231213187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231213187 is an equidigital number, since it uses as much as digits as its factorization.

12231213187 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The spelling of 12231213187 in words is "twelve billion, two hundred thirty-one million, two hundred thirteen thousand, one hundred eighty-seven".