222791 has 2 divisors, whose sum is σ = 222792. Its totient is φ = 222790.

The previous prime is 222787. The next prime is 222793. The reversal of 222791 is 197222.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222791 - 2² = 222787 is a prime.

It is a Sophie Germain prime.

Together with 222793, 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 (222793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111395 + 111396.

It is an arithmetic number, because the mean of its divisors is an integer number (111396).

2²²²⁷⁹¹ is an apocalyptic number.

222791 is a deficient number, since it is larger than the sum of its proper divisors (1).

222791 is an equidigital number, since it uses as much as digits as its factorization.

222791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504, while the sum is 23.

The square root of 222791 is about 472.0074151960. The cubic root of 222791 is about 60.6223192920.

The spelling of 222791 in words is "two hundred twenty-two thousand, seven hundred ninety-one".