13003332321 has 24 divisors (see below), whose sum is σ = 20173605984. Its totient is φ = 7428570240.

The previous prime is 13003332289. The next prime is 13003332337. The reversal of 13003332321 is 12323330031.

It is not a de Polignac number, because 13003332321 - 2⁵ = 13003332289 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (13003332721) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 726601 + ... + 744281.

It is an arithmetic number, because the mean of its divisors is an integer number (840566916).

Almost surely, 2^13003332321 is an apocalyptic number.

It is an amenable number.

13003332321 is a deficient number, since it is larger than the sum of its proper divisors (7170273663).

13003332321 is a wasteful number, since it uses less digits than its factorization.

13003332321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22701 (or 22694 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 13003332321 its reverse (12323330031), we get a palindrome (25326662352).

The spelling of 13003332321 in words is "thirteen billion, three million, three hundred thirty-two thousand, three hundred twenty-one".