220422197 has 2 divisors, whose sum is σ = 220422198. Its totient is φ = 220422196.

The previous prime is 220422193. The next prime is 220422199. The reversal of 220422197 is 791224022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203889841 + 16532356 = 14279^2 + 4066^2 .

It is a cyclic number.

It is not a de Polignac number, because 220422197 - 2² = 220422193 is a prime.

Together with 220422199, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220422193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110211098 + 110211099.

It is an arithmetic number, because the mean of its divisors is an integer number (110211099).

Almost surely, 2^220422197 is an apocalyptic number.

It is an amenable number.

220422197 is a deficient number, since it is larger than the sum of its proper divisors (1).

220422197 is an equidigital number, since it uses as much as digits as its factorization.

220422197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 220422197 is about 14846.6224105013. The cubic root of 220422197 is about 604.0669971221.

The spelling of 220422197 in words is "two hundred twenty million, four hundred twenty-two thousand, one hundred ninety-seven".