22122389 has 16 divisors (see below), whose sum is σ = 25297920. Its totient is φ = 19219200.

The previous prime is 22122371. The next prime is 22122391. The reversal of 22122389 is 98322122.

It is a cyclic number.

It is not a de Polignac number, because 22122389 - 2²⁴ = 5345173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122589) 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 in 15 ways as a sum of consecutive naturals, for example, 10364 + ... + 12314.

It is an arithmetic number, because the mean of its divisors is an integer number (1581120).

Almost surely, 2^22122389 is an apocalyptic number.

22122389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

22122389 is a deficient number, since it is larger than the sum of its proper divisors (3175531).

22122389 is a wasteful number, since it uses less digits than its factorization.

22122389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its digits is 3456, while the sum is 29.

The square root of 22122389 is about 4703.4443761992. Note that the first 3 decimals coincide. The cubic root of 22122389 is about 280.7225767192.

The spelling of 22122389 in words is "twenty-two million, one hundred twenty-two thousand, three hundred eighty-nine".