13321133321 has 4 divisors (see below), whose sum is σ = 13339062912. Its totient is φ = 13303203732.

The previous prime is 13321133303. The next prime is 13321133327. The reversal of 13321133321 is 12333112331.

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 13321133321 - 2²² = 13316939017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13321133327) 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, 8963681 + ... + 8965166.

It is an arithmetic number, because the mean of its divisors is an integer number (3334765728).

Almost surely, 2^13321133321 is an apocalyptic number.

It is an amenable number.

13321133321 is a deficient number, since it is larger than the sum of its proper divisors (17929591).

13321133321 is an equidigital number, since it uses as much as digits as its factorization.

13321133321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17929590.

The product of its digits is 972, while the sum is 23.

Adding to 13321133321 its reverse (12333112331), we get a palindrome (25654245652).

The spelling of 13321133321 in words is "thirteen billion, three hundred twenty-one million, one hundred thirty-three thousand, three hundred twenty-one".