220232189 has 2 divisors, whose sum is σ = 220232190. Its totient is φ = 220232188.

The previous prime is 220232123. The next prime is 220232203. The reversal of 220232189 is 981232022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193627225 + 26604964 = 13915^2 + 5158^2 .

It is a cyclic number.

It is not a de Polignac number, because 220232189 - 2⁸ = 220231933 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220238189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110116094 + 110116095.

It is an arithmetic number, because the mean of its divisors is an integer number (110116095).

Almost surely, 2^220232189 is an apocalyptic number.

It is an amenable number.

220232189 is a deficient number, since it is larger than the sum of its proper divisors (1).

220232189 is an equidigital number, since it uses as much as digits as its factorization.

220232189 is an evil number, because the sum of its binary digits is even.

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

The square root of 220232189 is about 14840.2219996872. The cubic root of 220232189 is about 603.8933749258.

The spelling of 220232189 in words is "two hundred twenty million, two hundred thirty-two thousand, one hundred eighty-nine".