12312455129899 has 2 divisors, whose sum is σ = 12312455129900. Its totient is φ = 12312455129898.

The previous prime is 12312455129869. The next prime is 12312455129911. The reversal of 12312455129899 is 99892155421321.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (99892155421321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12312455129899 - 2⁵ = 12312455129867 is a prime.

It is not a weakly prime, because it can be changed into another prime (12312455129869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156227564949 + 6156227564950.

It is an arithmetic number, because the mean of its divisors is an integer number (6156227564950).

Almost surely, 2^{12312455129899} is an apocalyptic number.

12312455129899 is a deficient number, since it is larger than the sum of its proper divisors (1).

12312455129899 is an equidigital number, since it uses as much as digits as its factorization.

12312455129899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13996800, while the sum is 61.

The spelling of 12312455129899 in words is "twelve trillion, three hundred twelve billion, four hundred fifty-five million, one hundred twenty-nine thousand, eight hundred ninety-nine".