220189 has 2 divisors, whose sum is σ = 220190.
Its totient is φ = 220188.
The previous prime is 220177. The next prime is 220217. The reversal of 220189 is 981022.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 202500 + 17689 = 450^2 + 133^2
It is a cyclic number.
It is not a de Polignac number, because 220189 - 29 = 219677 is a prime.
It is a nialpdrome in base 12.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (220169) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110094 + 110095.
It is an arithmetic number, because the mean of its divisors is an integer number (110095).
2220189 is an apocalyptic number.
It is an amenable number.
220189 is a deficient number, since it is larger than the sum of its proper divisors (1).
220189 is an equidigital number, since it uses as much as digits as its factorization.
220189 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 288, while the sum is 22.
The square root of 220189 is about 469.2430074066.
The cubic root of 220189 is about 60.3853896507.
The spelling of 220189 in words is "two hundred twenty thousand, one hundred eighty-nine".