13221029321 has 8 divisors (see below), whose sum is σ = 13354548480. Its totient is φ = 13088173392.

The previous prime is 13221029309. The next prime is 13221029333. The reversal of 13221029321 is 12392012231.

It is an interprime number because it is at equal distance from previous prime (13221029309) and next prime (13221029333).

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 13221029321 - 2¹⁸ = 13220767177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221029021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125690 + ... + 205523.

It is an arithmetic number, because the mean of its divisors is an integer number (1669318560).

Almost surely, 2^13221029321 is an apocalyptic number.

It is an amenable number.

13221029321 is a deficient number, since it is larger than the sum of its proper divisors (133519159).

13221029321 is a wasteful number, since it uses less digits than its factorization.

13221029321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331615.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 13221029321 in words is "thirteen billion, two hundred twenty-one million, twenty-nine thousand, three hundred twenty-one".