12111220012187 has 2 divisors, whose sum is σ = 12111220012188. Its totient is φ = 12111220012186.

The previous prime is 12111220012169. The next prime is 12111220012219. The reversal of 12111220012187 is 78121002211121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12111220012187 - 2⁸ = 12111220011931 is a prime.

It is not a weakly prime, because it can be changed into another prime (12111220017187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6055610006093 + 6055610006094.

It is an arithmetic number, because the mean of its divisors is an integer number (6055610006094).

Almost surely, 2^{12111220012187} is an apocalyptic number.

12111220012187 is a deficient number, since it is larger than the sum of its proper divisors (1).

12111220012187 is an equidigital number, since it uses as much as digits as its factorization.

12111220012187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 29.

The spelling of 12111220012187 in words is "twelve trillion, one hundred eleven billion, two hundred twenty million, twelve thousand, one hundred eighty-seven".