13221333321 has 24 divisors (see below), whose sum is σ = 21060797760. Its totient is φ = 7350854112.

The previous prime is 13221333233. The next prime is 13221333361. The reversal of 13221333321 is 12333312231.

It is not a de Polignac number, because 13221333321 - 2⁹ = 13221332809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13221333291 and 13221333300.

It is not an unprimeable number, because it can be changed into a prime (13221333361) 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 23 ways as a sum of consecutive naturals, for example, 1209981 + ... + 1220858.

It is an arithmetic number, because the mean of its divisors is an integer number (877533240).

Almost surely, 2^13221333321 is an apocalyptic number.

It is an amenable number.

13221333321 is a deficient number, since it is larger than the sum of its proper divisors (7839464439).

13221333321 is a wasteful number, since it uses less digits than its factorization.

13221333321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2430893 (or 2430886 counting only the distinct ones).

The product of its digits is 1944, while the sum is 24.

Adding to 13221333321 its reverse (12333312231), we get a palindrome (25554645552).

The spelling of 13221333321 in words is "thirteen billion, two hundred twenty-one million, three hundred thirty-three thousand, three hundred twenty-one".