220221220222189 has 2 divisors, whose sum is σ = 220221220222190. Its totient is φ = 220221220222188.

The previous prime is 220221220222187. The next prime is 220221220222249. The reversal of 220221220222189 is 981222022122022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 220188501562500 + 32718659689 = 14838750^2 + 180883^2 .

It is a cyclic number.

It is not a de Polignac number, because 220221220222189 - 2¹ = 220221220222187 is a prime.

It is a super-2 number, since 2×220221220222189² (a number of 29 digits) contains 22 as substring.

Together with 220221220222187, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220221220222187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110110610111094 + 110110610111095.

It is an arithmetic number, because the mean of its divisors is an integer number (110110610111095).

Almost surely, 2^{220221220222189} is an apocalyptic number.

It is an amenable number.

220221220222189 is a deficient number, since it is larger than the sum of its proper divisors (1).

220221220222189 is an equidigital number, since it uses as much as digits as its factorization.

220221220222189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 220221220222189 in words is "two hundred twenty trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty-two thousand, one hundred eighty-nine".