12211031871187 has 2 divisors, whose sum is σ = 12211031871188. Its totient is φ = 12211031871186.

The previous prime is 12211031871151. The next prime is 12211031871239. The reversal of 12211031871187 is 78117813011221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12211031871187 - 2¹⁵ = 12211031838419 is a prime.

It is not a weakly prime, because it can be changed into another prime (12211031871127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105515935593 + 6105515935594.

It is an arithmetic number, because the mean of its divisors is an integer number (6105515935594).

Almost surely, 2^{12211031871187} is an apocalyptic number.

12211031871187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12211031871187 is an equidigital number, since it uses as much as digits as its factorization.

12211031871187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 43.

The spelling of 12211031871187 in words is "twelve trillion, two hundred eleven billion, thirty-one million, eight hundred seventy-one thousand, one hundred eighty-seven".