13121244410121 has 24 divisors (see below), whose sum is σ = 19952675795520. Its totient is φ = 8286168904416.

The previous prime is 13121244410111. The next prime is 13121244410149. The reversal of 13121244410121 is 12101444212131.

13121244410121 is a `hidden beast` number, since 1 + 3 + 1 + 2 + 1 + 244 + 410 + 1 + 2 + 1 = 666.

13121244410121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13121244410121 - 2¹⁹ = 13121243885833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13121244410101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2793501 + ... + 5834906.

It is an arithmetic number, because the mean of its divisors is an integer number (831361491480).

Almost surely, 2^{13121244410121} is an apocalyptic number.

It is an amenable number.

13121244410121 is a deficient number, since it is larger than the sum of its proper divisors (6831431385399).

13121244410121 is a wasteful number, since it uses less digits than its factorization.

13121244410121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8637325 (or 8637322 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

Adding to 13121244410121 its reverse (12101444212131), we get a palindrome (25222688622252).

The spelling of 13121244410121 in words is "thirteen trillion, one hundred twenty-one billion, two hundred forty-four million, four hundred ten thousand, one hundred twenty-one".