12998163923021 has 2 divisors, whose sum is σ = 12998163923022. Its totient is φ = 12998163923020.

The previous prime is 12998163923009. The next prime is 12998163923123. The reversal of 12998163923021 is 12032936189921.

It is a happy number.

12998163923021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10346444794921 + 2651719128100 = 3216589^2 + 1628410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12998163923021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12998163943021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6499081961510 + 6499081961511.

It is an arithmetic number, because the mean of its divisors is an integer number (6499081961511).

Almost surely, 2^{12998163923021} is an apocalyptic number.

It is an amenable number.

12998163923021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12998163923021 is an equidigital number, since it uses as much as digits as its factorization.

12998163923021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2519424, while the sum is 56.

The spelling of 12998163923021 in words is "twelve trillion, nine hundred ninety-eight billion, one hundred sixty-three million, nine hundred twenty-three thousand, twenty-one".