12998163921091 has 2 divisors, whose sum is σ = 12998163921092. Its totient is φ = 12998163921090.

The previous prime is 12998163921073. The next prime is 12998163921097. The reversal of 12998163921091 is 19012936189921.

It is a strong prime.

It is an emirp because it is prime and its reverse (19012936189921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12998163921091 - 2⁹ = 12998163920579 is a prime.

It is not a weakly prime, because it can be changed into another prime (12998163921097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499081960545 + 6499081960546.

It is an arithmetic number, because the mean of its divisors is an integer number (6499081960546).

Almost surely, 2^{12998163921091} is an apocalyptic number.

12998163921091 is a deficient number, since it is larger than the sum of its proper divisors (1).

12998163921091 is an equidigital number, since it uses as much as digits as its factorization.

12998163921091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3779136, while the sum is 61.

The spelling of 12998163921091 in words is "twelve trillion, nine hundred ninety-eight billion, one hundred sixty-three million, nine hundred twenty-one thousand, ninety-one".