13121321301111 has 4 divisors (see below), whose sum is σ = 17495095068152. Its totient is φ = 8747547534072.

The previous prime is 13121321301089. The next prime is 13121321301161. The reversal of 13121321301111 is 11110312312131.

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

It is not a de Polignac number, because 13121321301111 - 2²¹ = 13121319203959 is a prime.

It is a super-3 number, since 3×13121321301111³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13121321301161) 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, 2186886883516 + ... + 2186886883521.

It is an arithmetic number, because the mean of its divisors is an integer number (4373773767038).

Almost surely, 2^{13121321301111} is an apocalyptic number.

13121321301111 is a deficient number, since it is larger than the sum of its proper divisors (4373773767041).

13121321301111 is an equidigital number, since it uses as much as digits as its factorization.

13121321301111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4373773767040.

The product of its (nonzero) digits is 108, while the sum is 21.

Adding to 13121321301111 its reverse (11110312312131), we get a palindrome (24231633613242).

The spelling of 13121321301111 in words is "thirteen trillion, one hundred twenty-one billion, three hundred twenty-one million, three hundred one thousand, one hundred eleven".