22189 has 2 divisors, whose sum is σ = 22190. Its totient is φ = 22188.

The previous prime is 22171. The next prime is 22193. The reversal of 22189 is 98122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20164 + 2025 = 142^2 + 45^2 .

It is a cyclic number.

It is not a de Polignac number, because 22189 - 2⁵ = 22157 is a prime.

It is equal to p₂₄₈₈ and since 22189 and 2488 have the same sum of digits, it is a Honaker prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11094 + 11095.

It is an arithmetic number, because the mean of its divisors is an integer number (11095).

2²²¹⁸⁹ is an apocalyptic number.

It is an amenable number.

22189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22189 is an equidigital number, since it uses as much as digits as its factorization.

22189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 22.

The square root of 22189 is about 148.9597261007. The cubic root of 22189 is about 28.1004048354.

The spelling of 22189 in words is "twenty-two thousand, one hundred eighty-nine".