12231111187 has 2 divisors, whose sum is σ = 12231111188. Its totient is φ = 12231111186.

The previous prime is 12231111107. The next prime is 12231111239. The reversal of 12231111187 is 78111113221.

12231111187 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12231111187 is a prime.

It is not a weakly prime, because it can be changed into another prime (12231111107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6115555593 + 6115555594.

It is an arithmetic number, because the mean of its divisors is an integer number (6115555594).

Almost surely, 2^12231111187 is an apocalyptic number.

12231111187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12231111187 is an equidigital number, since it uses as much as digits as its factorization.

12231111187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 672, while the sum is 28.

The spelling of 12231111187 in words is "twelve billion, two hundred thirty-one million, one hundred eleven thousand, one hundred eighty-seven".