22222222189 has 2 divisors, whose sum is σ = 22222222190. Its totient is φ = 22222222188.

The previous prime is 22222222177. The next prime is 22222222223. The reversal of 22222222189 is 98122222222.

It is an a-pointer prime, because the next prime (22222222223) can be obtained adding 22222222189 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15194753289 + 7027468900 = 123267^2 + 83830^2 .

It is a cyclic number.

It is not a de Polignac number, because 22222222189 - 2⁵ = 22222222157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22222222159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111111094 + 11111111095.

It is an arithmetic number, because the mean of its divisors is an integer number (11111111095).

Almost surely, 2^22222222189 is an apocalyptic number.

It is an amenable number.

22222222189 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222222189 is an equidigital number, since it uses as much as digits as its factorization.

22222222189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 34.

The spelling of 22222222189 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, one hundred eighty-nine".