22152530321 has 4 divisors (see below), whose sum is σ = 22157785200. Its totient is φ = 22147275444.

The previous prime is 22152530317. The next prime is 22152530329. The reversal of 22152530321 is 12303525122.

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 a cyclic number.

It is not a de Polignac number, because 22152530321 - 2² = 22152530317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22152530329) 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, 2621111 + ... + 2629548.

It is an arithmetic number, because the mean of its divisors is an integer number (5539446300).

Almost surely, 2^22152530321 is an apocalyptic number.

It is an amenable number.

22152530321 is a deficient number, since it is larger than the sum of its proper divisors (5254879).

22152530321 is an equidigital number, since it uses as much as digits as its factorization.

22152530321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5254878.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 22152530321 in words is "twenty-two billion, one hundred fifty-two million, five hundred thirty thousand, three hundred twenty-one".