12119998987 has 2 divisors, whose sum is σ = 12119998988. Its totient is φ = 12119998986.

The previous prime is 12119998973. The next prime is 12119999009. The reversal of 12119998987 is 78989991121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12119998987 - 2²⁷ = 11985781259 is a prime.

It is not a weakly prime, because it can be changed into another prime (12119998937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059999493 + 6059999494.

It is an arithmetic number, because the mean of its divisors is an integer number (6059999494).

Almost surely, 2^12119998987 is an apocalyptic number.

12119998987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12119998987 is an equidigital number, since it uses as much as digits as its factorization.

12119998987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5878656, while the sum is 64.

The spelling of 12119998987 in words is "twelve billion, one hundred nineteen million, nine hundred ninety-eight thousand, nine hundred eighty-seven".