22013311321 has 4 divisors (see below), whose sum is σ = 22013870544. Its totient is φ = 22012752100.

The previous prime is 22013311319. The next prime is 22013311361. The reversal of 22013311321 is 12311331022.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12311331022 = 2 ⋅6155665511.

It is a cyclic number.

It is not a de Polignac number, because 22013311321 - 2¹ = 22013311319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22013311361) 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, 215695 + ... + 300916.

It is an arithmetic number, because the mean of its divisors is an integer number (5503467636).

Almost surely, 2^22013311321 is an apocalyptic number.

It is an amenable number.

22013311321 is a deficient number, since it is larger than the sum of its proper divisors (559223).

22013311321 is an equidigital number, since it uses as much as digits as its factorization.

22013311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559222.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 22013311321 its reverse (12311331022), we get a palindrome (34324642343).

The spelling of 22013311321 in words is "twenty-two billion, thirteen million, three hundred eleven thousand, three hundred twenty-one".