13222323021 has 4 divisors (see below), whose sum is σ = 17629764032. Its totient is φ = 8814882012.

The previous prime is 13222323011. The next prime is 13222323047. The reversal of 13222323021 is 12032322231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 13222323021 - 2¹⁵ = 13222290253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13222323011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2203720501 + ... + 2203720506.

It is an arithmetic number, because the mean of its divisors is an integer number (4407441008).

Almost surely, 2^13222323021 is an apocalyptic number.

It is an amenable number.

13222323021 is a deficient number, since it is larger than the sum of its proper divisors (4407441011).

13222323021 is an equidigital number, since it uses as much as digits as its factorization.

13222323021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4407441010.

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 13222323021 its reverse (12032322231), we get a palindrome (25254645252).

The spelling of 13222323021 in words is "thirteen billion, two hundred twenty-two million, three hundred twenty-three thousand, twenty-one".