22117399 has 2 divisors, whose sum is σ = 22117400. Its totient is φ = 22117398.

The previous prime is 22117369. The next prime is 22117427. The reversal of 22117399 is 99371122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22117399 - 2²³ = 13728791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22117339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11058699 + 11058700.

It is an arithmetic number, because the mean of its divisors is an integer number (11058700).

Almost surely, 2^22117399 is an apocalyptic number.

22117399 is a deficient number, since it is larger than the sum of its proper divisors (1).

22117399 is an equidigital number, since it uses as much as digits as its factorization.

22117399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 34.

The square root of 22117399 is about 4702.9138839660. The cubic root of 22117399 is about 280.7014682245.

The spelling of 22117399 in words is "twenty-two million, one hundred seventeen thousand, three hundred ninety-nine".