22111689959 has 2 divisors, whose sum is σ = 22111689960. Its totient is φ = 22111689958.

The previous prime is 22111689953. The next prime is 22111690031. The reversal of 22111689959 is 95998611122.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22111689959 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22111689959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22111689953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11055844979 + 11055844980.

It is an arithmetic number, because the mean of its divisors is an integer number (11055844980).

Almost surely, 2^22111689959 is an apocalyptic number.

22111689959 is a deficient number, since it is larger than the sum of its proper divisors (1).

22111689959 is an equidigital number, since it uses as much as digits as its factorization.

22111689959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 53.

The spelling of 22111689959 in words is "twenty-two billion, one hundred eleven million, six hundred eighty-nine thousand, nine hundred fifty-nine".