12031212187 has 2 divisors, whose sum is σ = 12031212188. Its totient is φ = 12031212186.

The previous prime is 12031212181. The next prime is 12031212197. The reversal of 12031212187 is 78121213021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12031212187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12031212181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015606093 + 6015606094.

It is an arithmetic number, because the mean of its divisors is an integer number (6015606094).

Almost surely, 2^12031212187 is an apocalyptic number.

12031212187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031212187 is an equidigital number, since it uses as much as digits as its factorization.

12031212187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 28.

The spelling of 12031212187 in words is "twelve billion, thirty-one million, two hundred twelve thousand, one hundred eighty-seven".