12210112111987 has 2 divisors, whose sum is σ = 12210112111988. Its totient is φ = 12210112111986.

The previous prime is 12210112111949. The next prime is 12210112112017. The reversal of 12210112111987 is 78911121101221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12210112111987 is a prime.

It is not a weakly prime, because it can be changed into another prime (12210112111387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6105056055993 + 6105056055994.

It is an arithmetic number, because the mean of its divisors is an integer number (6105056055994).

Almost surely, 2^{12210112111987} is an apocalyptic number.

12210112111987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12210112111987 is an equidigital number, since it uses as much as digits as its factorization.

12210112111987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 37.

The spelling of 12210112111987 in words is "twelve trillion, two hundred ten billion, one hundred twelve million, one hundred eleven thousand, nine hundred eighty-seven".