2152225321 has 4 divisors (see below), whose sum is σ = 2152319632. Its totient is φ = 2152131012.

The previous prime is 2152225307. The next prime is 2152225333. The reversal of 2152225321 is 1235222512.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2152225321 - 2⁵ = 2152225289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152225021) 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, 10906 + ... + 66508.

It is an arithmetic number, because the mean of its divisors is an integer number (538079908).

Almost surely, 2^2152225321 is an apocalyptic number.

It is an amenable number.

2152225321 is a deficient number, since it is larger than the sum of its proper divisors (94311).

2152225321 is an equidigital number, since it uses as much as digits as its factorization.

2152225321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94310.

The product of its digits is 2400, while the sum is 25.

The square root of 2152225321 is about 46392.0825249309. The cubic root of 2152225321 is about 1291.1080200325.

Adding to 2152225321 its reverse (1235222512), we get a palindrome (3387447833).

The spelling of 2152225321 in words is "two billion, one hundred fifty-two million, two hundred twenty-five thousand, three hundred twenty-one".