13221002321 has 8 divisors (see below), whose sum is σ = 13377635040. Its totient is φ = 13064784768.

The previous prime is 13221002317. The next prime is 13221002329. The reversal of 13221002321 is 12320012231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13221002321 - 2² = 13221002317 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13221002321.

It is not an unprimeable number, because it can be changed into a prime (13221002329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39491 + ... + 167336.

It is an arithmetic number, because the mean of its divisors is an integer number (1672204380).

Almost surely, 2^13221002321 is an apocalyptic number.

It is an amenable number.

13221002321 is a deficient number, since it is larger than the sum of its proper divisors (156632719).

13221002321 is an equidigital number, since it uses as much as digits as its factorization.

13221002321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207583.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 13221002321 its reverse (12320012231), we get a palindrome (25541014552).

The spelling of 13221002321 in words is "thirteen billion, two hundred twenty-one million, two thousand, three hundred twenty-one".