22005331 has 2 divisors, whose sum is σ = 22005332. Its totient is φ = 22005330.

The previous prime is 22005317. The next prime is 22005349. The reversal of 22005331 is 13350022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22005331 - 2⁹ = 22004819 is a prime.

It is a super-2 number, since 2×22005331² = 968469184839122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22005311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11002665 + 11002666.

It is an arithmetic number, because the mean of its divisors is an integer number (11002666).

Almost surely, 2^22005331 is an apocalyptic number.

22005331 is a deficient number, since it is larger than the sum of its proper divisors (1).

22005331 is an equidigital number, since it uses as much as digits as its factorization.

22005331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 22005331 is about 4690.9840119105. The cubic root of 22005331 is about 280.2265640735.

Adding to 22005331 its reverse (13350022), we get a palindrome (35355353).

The spelling of 22005331 in words is "twenty-two million, five thousand, three hundred thirty-one".