13021201320 has 64 divisors (see below), whose sum is σ = 40119390720. Its totient is φ = 3378472704.

The previous prime is 13021201313. The next prime is 13021201331. The reversal of 13021201320 is 2310212031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 13021201320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461912 + ... + 1470791.

It is an arithmetic number, because the mean of its divisors is an integer number (626865480).

Almost surely, 2^13021201320 is an apocalyptic number.

13021201320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021201320 is an abundant number, since it is smaller than the sum of its proper divisors (27098189400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13021201320 is a wasteful number, since it uses less digits than its factorization.

13021201320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2932754 (or 2932750 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13021201320 its reverse (2310212031), we get a palindrome (15331413351).

The spelling of 13021201320 in words is "thirteen billion, twenty-one million, two hundred one thousand, three hundred twenty".