12998163921011 has 4 divisors (see below), whose sum is σ = 13000959831000. Its totient is φ = 12995368011024.

The previous prime is 12998163921007. The next prime is 12998163921047. The reversal of 12998163921011 is 11012936189921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12998163921011 - 2² = 12998163921007 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12998163921091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397948021 + ... + 1397957318.

It is an arithmetic number, because the mean of its divisors is an integer number (3250239957750).

Almost surely, 2^{12998163921011} is an apocalyptic number.

12998163921011 is a deficient number, since it is larger than the sum of its proper divisors (2795909989).

12998163921011 is an equidigital number, since it uses as much as digits as its factorization.

12998163921011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795909988.

The product of its (nonzero) digits is 419904, while the sum is 53.

The spelling of 12998163921011 in words is "twelve trillion, nine hundred ninety-eight billion, one hundred sixty-three million, nine hundred twenty-one thousand, eleven".