13011112321 has 4 divisors (see below), whose sum is σ = 13011402544. Its totient is φ = 13010822100.

The previous prime is 13011112267. The next prime is 13011112343. The reversal of 13011112321 is 12321111031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12321111031 = 7727 ⋅1594553.

It is a cyclic number.

It is not a de Polignac number, because 13011112321 - 2²⁵ = 12977557889 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13011112295 and 13011112304.

It is not an unprimeable number, because it can be changed into a prime (13011112921) 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, 61995 + ... + 172816.

It is an arithmetic number, because the mean of its divisors is an integer number (3252850636).

Almost surely, 2^13011112321 is an apocalyptic number.

It is an amenable number.

13011112321 is a deficient number, since it is larger than the sum of its proper divisors (290223).

13011112321 is an equidigital number, since it uses as much as digits as its factorization.

13011112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290222.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 13011112321 its reverse (12321111031), we get a palindrome (25332223352).

The spelling of 13011112321 in words is "thirteen billion, eleven million, one hundred twelve thousand, three hundred twenty-one".