13220021313 has 16 divisors (see below), whose sum is σ = 19726123200. Its totient is φ = 8749939680.

The previous prime is 13220021299. The next prime is 13220021323. The reversal of 13220021313 is 31312002231.

13220021313 is a `hidden beast` number, since 132 + 200 + 21 + 313 = 666.

It is not a de Polignac number, because 13220021313 - 2⁵ = 13220021281 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13220021323) 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, 1757508 + ... + 1765013.

It is an arithmetic number, because the mean of its divisors is an integer number (1232882700).

Almost surely, 2^13220021313 is an apocalyptic number.

It is an amenable number.

13220021313 is a deficient number, since it is larger than the sum of its proper divisors (6506101887).

13220021313 is a wasteful number, since it uses less digits than its factorization.

13220021313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522669 (or 3522663 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 13220021313 its reverse (31312002231), we get a palindrome (44532023544).

The spelling of 13220021313 in words is "thirteen billion, two hundred twenty million, twenty-one thousand, three hundred thirteen".