22120231321 has 4 divisors (see below), whose sum is σ = 22125448912. Its totient is φ = 22115013732.

The previous prime is 22120231307. The next prime is 22120231327. The reversal of 22120231321 is 12313202122.

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 a cyclic number.

It is not a de Polignac number, because 22120231321 - 2⁷ = 22120231193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120231327) 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, 2602431 + ... + 2610916.

It is an arithmetic number, because the mean of its divisors is an integer number (5531362228).

Almost surely, 2^22120231321 is an apocalyptic number.

It is an amenable number.

22120231321 is a deficient number, since it is larger than the sum of its proper divisors (5217591).

22120231321 is an equidigital number, since it uses as much as digits as its factorization.

22120231321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217590.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 22120231321 its reverse (12313202122), we get a palindrome (34433433443).

The spelling of 22120231321 in words is "twenty-two billion, one hundred twenty million, two hundred thirty-one thousand, three hundred twenty-one".