22128935869 has 2 divisors, whose sum is σ = 22128935870. Its totient is φ = 22128935868.

The previous prime is 22128935861. The next prime is 22128935893. The reversal of 22128935869 is 96853982122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13361048100 + 8767887769 = 115590^2 + 93637^2 .

It is a cyclic number.

It is not a de Polignac number, because 22128935869 - 2³ = 22128935861 is a prime.

It is a super-2 number, since 2×22128935869² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22128935861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11064467934 + 11064467935.

It is an arithmetic number, because the mean of its divisors is an integer number (11064467935).

Almost surely, 2^22128935869 is an apocalyptic number.

It is an amenable number.

22128935869 is a deficient number, since it is larger than the sum of its proper divisors (1).

22128935869 is an equidigital number, since it uses as much as digits as its factorization.

22128935869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 55.

The spelling of 22128935869 in words is "twenty-two billion, one hundred twenty-eight million, nine hundred thirty-five thousand, eight hundred sixty-nine".