222394871 has 2 divisors, whose sum is σ = 222394872. Its totient is φ = 222394870.

The previous prime is 222394831. The next prime is 222394873. The reversal of 222394871 is 178493222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222394871 - 2⁶ = 222394807 is a prime.

It is a Sophie Germain prime.

Together with 222394873, 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 (222394873) 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, 111197435 + 111197436.

It is an arithmetic number, because the mean of its divisors is an integer number (111197436).

Almost surely, 2^222394871 is an apocalyptic number.

222394871 is a deficient number, since it is larger than the sum of its proper divisors (1).

222394871 is an equidigital number, since it uses as much as digits as its factorization.

222394871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 222394871 is about 14912.9095417360. The cubic root of 222394871 is about 605.8636854966.

The spelling of 222394871 in words is "two hundred twenty-two million, three hundred ninety-four thousand, eight hundred seventy-one".