22225031321 has 4 divisors (see below), whose sum is σ = 22264091700. Its totient is φ = 22185970944.

The previous prime is 22225031303. The next prime is 22225031377. The reversal of 22225031321 is 12313052222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4417463296 + 17807568025 = 66464^2 + 133445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22225031321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22225231321) 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, 19529336 + ... + 19530473.

It is an arithmetic number, because the mean of its divisors is an integer number (5566022925).

Almost surely, 2^22225031321 is an apocalyptic number.

It is an amenable number.

22225031321 is a deficient number, since it is larger than the sum of its proper divisors (39060379).

22225031321 is an equidigital number, since it uses as much as digits as its factorization.

22225031321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39060378.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 22225031321 its reverse (12313052222), we get a palindrome (34538083543).

The spelling of 22225031321 in words is "twenty-two billion, two hundred twenty-five million, thirty-one thousand, three hundred twenty-one".