222564091 has 2 divisors, whose sum is σ = 222564092. Its totient is φ = 222564090.

The previous prime is 222564059. The next prime is 222564109. The reversal of 222564091 is 190465222.

Together with next prime (222564109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 222564091 - 2⁵ = 222564059 is a prime.

It is not a weakly prime, because it can be changed into another prime (222564011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111282045 + 111282046.

It is an arithmetic number, because the mean of its divisors is an integer number (111282046).

Almost surely, 2^222564091 is an apocalyptic number.

222564091 is a deficient number, since it is larger than the sum of its proper divisors (1).

222564091 is an equidigital number, since it uses as much as digits as its factorization.

222564091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 222564091 is about 14918.5820706929. The cubic root of 222564091 is about 606.0173135305.

The spelling of 222564091 in words is "two hundred twenty-two million, five hundred sixty-four thousand, ninety-one".