13321332291 has 4 divisors (see below), whose sum is σ = 17761776392. Its totient is φ = 8880888192.

The previous prime is 13321332251. The next prime is 13321332313. The reversal of 13321332291 is 19223312331.

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

It is not a de Polignac number, because 13321332291 - 2⁷ = 13321332163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13321332251) 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, 2220222046 + ... + 2220222051.

It is an arithmetic number, because the mean of its divisors is an integer number (4440444098).

Almost surely, 2^13321332291 is an apocalyptic number.

13321332291 is a deficient number, since it is larger than the sum of its proper divisors (4440444101).

13321332291 is an equidigital number, since it uses as much as digits as its factorization.

13321332291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4440444100.

The product of its digits is 5832, while the sum is 30.

The spelling of 13321332291 in words is "thirteen billion, three hundred twenty-one million, three hundred thirty-two thousand, two hundred ninety-one".