12013129987 has 2 divisors, whose sum is σ = 12013129988. Its totient is φ = 12013129986.

The previous prime is 12013129979. The next prime is 12013130009. The reversal of 12013129987 is 78992131021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12013129987 - 2³ = 12013129979 is a prime.

It is not a weakly prime, because it can be changed into another prime (12013129967) 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, 6006564993 + 6006564994.

It is an arithmetic number, because the mean of its divisors is an integer number (6006564994).

Almost surely, 2^12013129987 is an apocalyptic number.

12013129987 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013129987 is an equidigital number, since it uses as much as digits as its factorization.

12013129987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 43.

The spelling of 12013129987 in words is "twelve billion, thirteen million, one hundred twenty-nine thousand, nine hundred eighty-seven".