13321311112321 has 4 divisors (see below), whose sum is σ = 13330441553200. Its totient is φ = 13312180671444.

The previous prime is 13321311112303. The next prime is 13321311112381. The reversal of 13321311112321 is 12321111312331.

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.

It is a cyclic number.

It is not a de Polignac number, because 13321311112321 - 2⁹ = 13321311111809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321311112381) 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, 4565218251 + ... + 4565221168.

It is an arithmetic number, because the mean of its divisors is an integer number (3332610388300).

Almost surely, 2^{13321311112321} is an apocalyptic number.

It is an amenable number.

13321311112321 is a deficient number, since it is larger than the sum of its proper divisors (9130440879).

13321311112321 is an equidigital number, since it uses as much as digits as its factorization.

13321311112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130440878.

The product of its digits is 648, while the sum is 25.

Adding to 13321311112321 its reverse (12321111312331), we get a palindrome (25642422424652).

The spelling of 13321311112321 in words is "thirteen trillion, three hundred twenty-one billion, three hundred eleven million, one hundred twelve thousand, three hundred twenty-one".