22115959 has 2 divisors, whose sum is σ = 22115960. Its totient is φ = 22115958.

The previous prime is 22115941. The next prime is 22115983. The reversal of 22115959 is 95951122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22115959 - 2⁷ = 22115831 is a prime.

It is equal to p_1396087 and since 22115959 and 1396087 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22116959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11057979 + 11057980.

It is an arithmetic number, because the mean of its divisors is an integer number (11057980).

Almost surely, 2^22115959 is an apocalyptic number.

22115959 is a deficient number, since it is larger than the sum of its proper divisors (1).

22115959 is an equidigital number, since it uses as much as digits as its factorization.

22115959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100, while the sum is 34.

The square root of 22115959 is about 4702.7607849007. The cubic root of 22115959 is about 280.6953762048.

The spelling of 22115959 in words is "twenty-two million, one hundred fifteen thousand, nine hundred fifty-nine".