22245331 has 2 divisors, whose sum is σ = 22245332. Its totient is φ = 22245330.

The previous prime is 22245323. The next prime is 22245337. The reversal of 22245331 is 13354222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22245331 - 2³ = 22245323 is a prime.

It is a super-2 number, since 2×22245331² = 989709502599122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22245337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11122665 + 11122666.

It is an arithmetic number, because the mean of its divisors is an integer number (11122666).

Almost surely, 2^22245331 is an apocalyptic number.

22245331 is a deficient number, since it is larger than the sum of its proper divisors (1).

22245331 is an equidigital number, since it uses as much as digits as its factorization.

22245331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 22.

The square root of 22245331 is about 4716.4956270519. The cubic root of 22245331 is about 281.2416414965.

Adding to 22245331 its reverse (13354222), we get a palindrome (35599553).

The spelling of 22245331 in words is "twenty-two million, two hundred forty-five thousand, three hundred thirty-one".