13023121321121 has 8 divisors (see below), whose sum is σ = 13036373059200. Its totient is φ = 13009871221200.

The previous prime is 13023121321081. The next prime is 13023121321123. The reversal of 13023121321121 is 12112312132031.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13023121321121 - 2⁶ = 13023121321057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13023121321123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15825095 + ... + 16627683.

It is an arithmetic number, because the mean of its divisors is an integer number (1629546632400).

Almost surely, 2^{13023121321121} is an apocalyptic number.

It is an amenable number.

13023121321121 is a deficient number, since it is larger than the sum of its proper divisors (13251738079).

13023121321121 is a wasteful number, since it uses less digits than its factorization.

13023121321121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819079.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 13023121321121 its reverse (12112312132031), we get a palindrome (25135433453152).

The spelling of 13023121321121 in words is "thirteen trillion, twenty-three billion, one hundred twenty-one million, three hundred twenty-one thousand, one hundred twenty-one".