222161171 has 2 divisors, whose sum is σ = 222161172. Its totient is φ = 222161170.

The previous prime is 222161143. The next prime is 222161183. The reversal of 222161171 is 171161222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222161171 - 2²² = 217966867 is a prime.

It is not a weakly prime, because it can be changed into another prime (222161101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111080585 + 111080586.

It is an arithmetic number, because the mean of its divisors is an integer number (111080586).

Almost surely, 2^222161171 is an apocalyptic number.

222161171 is a deficient number, since it is larger than the sum of its proper divisors (1).

222161171 is an equidigital number, since it uses as much as digits as its factorization.

222161171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 336, while the sum is 23.

The square root of 222161171 is about 14905.0719890915. The cubic root of 222161171 is about 605.6513904804.

The spelling of 222161171 in words is "two hundred twenty-two million, one hundred sixty-one thousand, one hundred seventy-one".