13220111313 has 6 divisors (see below), whose sum is σ = 19095716354. Its totient is φ = 8813407536.

The previous prime is 13220111287. The next prime is 13220111363. The reversal of 13220111313 is 31311102231.

It can be written as a sum of positive squares in only one way, i.e., 13122160704 + 97950609 = 114552^2 + 9897^2 .

It is not a de Polignac number, because 13220111313 - 2⁶ = 13220111249 is a prime.

It is a super-2 number, since 2×13220111313² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13220111363) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734450620 + ... + 734450637.

Almost surely, 2^13220111313 is an apocalyptic number.

It is an amenable number.

13220111313 is a deficient number, since it is larger than the sum of its proper divisors (5875605041).

13220111313 is a wasteful number, since it uses less digits than its factorization.

13220111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468901263 (or 1468901260 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 13220111313 its reverse (31311102231), we get a palindrome (44531213544).

The spelling of 13220111313 in words is "thirteen billion, two hundred twenty million, one hundred eleven thousand, three hundred thirteen".