220102189 has 2 divisors, whose sum is σ = 220102190. Its totient is φ = 220102188.

The previous prime is 220102177. The next prime is 220102231. The reversal of 220102189 is 981201022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220077225 + 24964 = 14835^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 220102189 - 2¹¹ = 220100141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220102789) 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, 110051094 + 110051095.

It is an arithmetic number, because the mean of its divisors is an integer number (110051095).

Almost surely, 2^220102189 is an apocalyptic number.

It is an amenable number.

220102189 is a deficient number, since it is larger than the sum of its proper divisors (1).

220102189 is an equidigital number, since it uses as much as digits as its factorization.

220102189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 25.

The square root of 220102189 is about 14835.8413647491. The cubic root of 220102189 is about 603.7745282498.

The spelling of 220102189 in words is "two hundred twenty million, one hundred two thousand, one hundred eighty-nine".