222266171 has 2 divisors, whose sum is σ = 222266172. Its totient is φ = 222266170.

The previous prime is 222266167. The next prime is 222266173. The reversal of 222266171 is 171662222.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222266171 - 2² = 222266167 is a prime.

Together with 222266173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (222266173) 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, 111133085 + 111133086.

It is an arithmetic number, because the mean of its divisors is an integer number (111133086).

Almost surely, 2^222266171 is an apocalyptic number.

222266171 is a deficient number, since it is larger than the sum of its proper divisors (1).

222266171 is an equidigital number, since it uses as much as digits as its factorization.

222266171 is an odious number, because the sum of its binary digits is odd.

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

The square root of 222266171 is about 14908.5938639430. The cubic root of 222266171 is about 605.7467917599.

The spelling of 222266171 in words is "two hundred twenty-two million, two hundred sixty-six thousand, one hundred seventy-one".