13221332313 has 16 divisors (see below), whose sum is σ = 20149601280. Its totient is φ = 7553993616.

The previous prime is 13221332309. The next prime is 13221332317. The reversal of 13221332313 is 31323312231.

It is an interprime number because it is at equal distance from previous prime (13221332309) and next prime (13221332317).

It is not a de Polignac number, because 13221332313 - 2² = 13221332309 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13221332317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125506 + ... + 205412.

It is an arithmetic number, because the mean of its divisors is an integer number (1259350080).

Almost surely, 2^13221332313 is an apocalyptic number.

It is an amenable number.

13221332313 is a deficient number, since it is larger than the sum of its proper divisors (6928268967).

13221332313 is an equidigital number, since it uses as much as digits as its factorization.

13221332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87796.

The product of its digits is 1944, while the sum is 24.

Adding to 13221332313 its reverse (31323312231), we get a palindrome (44544644544).

The spelling of 13221332313 in words is "thirteen billion, two hundred twenty-one million, three hundred thirty-two thousand, three hundred thirteen".