13221021233 has 8 divisors (see below), whose sum is σ = 15357439680. Its totient is φ = 11146528080.

The previous prime is 13221021223. The next prime is 13221021239. The reversal of 13221021233 is 33212012231.

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 13221021233 - 2¹⁶ = 13220955697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13221021239) 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, 15480863 + ... + 15481716.

It is an arithmetic number, because the mean of its divisors is an integer number (1919679960).

Almost surely, 2^13221021233 is an apocalyptic number.

It is an amenable number.

13221021233 is a deficient number, since it is larger than the sum of its proper divisors (2136418447).

13221021233 is an equidigital number, since it uses as much as digits as its factorization.

13221021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30962647.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 13221021233 its reverse (33212012231), we get a palindrome (46433033464).

The spelling of 13221021233 in words is "thirteen billion, two hundred twenty-one million, twenty-one thousand, two hundred thirty-three".