222188893 has 2 divisors, whose sum is σ = 222188894. Its totient is φ = 222188892.

The previous prime is 222188851. The next prime is 222188909. The reversal of 222188893 is 398881222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209033764 + 13155129 = 14458^2 + 3627^2 .

It is a cyclic number.

It is not a de Polignac number, because 222188893 - 2¹⁷ = 222057821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222188803) 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, 111094446 + 111094447.

It is an arithmetic number, because the mean of its divisors is an integer number (111094447).

Almost surely, 2^222188893 is an apocalyptic number.

It is an amenable number.

222188893 is a deficient number, since it is larger than the sum of its proper divisors (1).

222188893 is an equidigital number, since it uses as much as digits as its factorization.

222188893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 110592, while the sum is 43.

The square root of 222188893 is about 14906.0019119816. The cubic root of 222188893 is about 605.6765811553.

The spelling of 222188893 in words is "two hundred twenty-two million, one hundred eighty-eight thousand, eight hundred ninety-three".