22089971 has 2 divisors, whose sum is σ = 22089972. Its totient is φ = 22089970.

The previous prime is 22089937. The next prime is 22089973. The reversal of 22089971 is 17998022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22089971 - 2¹⁴ = 22073587 is a prime.

Together with 22089973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22089973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11044985 + 11044986.

It is an arithmetic number, because the mean of its divisors is an integer number (11044986).

Almost surely, 2^22089971 is an apocalyptic number.

22089971 is a deficient number, since it is larger than the sum of its proper divisors (1).

22089971 is an equidigital number, since it uses as much as digits as its factorization.

22089971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 22089971 is about 4699.9969148926. The cubic root of 22089971 is about 280.5853866932.

The spelling of 22089971 in words is "twenty-two million, eighty-nine thousand, nine hundred seventy-one".