222122189 has 2 divisors, whose sum is σ = 222122190. Its totient is φ = 222122188.

The previous prime is 222122183. The next prime is 222122207. The reversal of 222122189 is 981221222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186540964 + 35581225 = 13658^2 + 5965^2 .

It is a cyclic number.

It is not a de Polignac number, because 222122189 - 2²⁰ = 221073613 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222122183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111061094 + 111061095.

It is an arithmetic number, because the mean of its divisors is an integer number (111061095).

Almost surely, 2^222122189 is an apocalyptic number.

It is an amenable number.

222122189 is a deficient number, since it is larger than the sum of its proper divisors (1).

222122189 is an equidigital number, since it uses as much as digits as its factorization.

222122189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The square root of 222122189 is about 14903.7642560529. The cubic root of 222122189 is about 605.6159644225.

The spelling of 222122189 in words is "two hundred twenty-two million, one hundred twenty-two thousand, one hundred eighty-nine".