222189973 has 2 divisors, whose sum is σ = 222189974. Its totient is φ = 222189972.

The previous prime is 222189953. The next prime is 222189977. The reversal of 222189973 is 379981222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172318129 + 49871844 = 13127^2 + 7062^2 .

It is a cyclic number.

It is not a de Polignac number, because 222189973 - 2¹⁷ = 222058901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222189977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111094986 + 111094987.

It is an arithmetic number, because the mean of its divisors is an integer number (111094987).

Almost surely, 2^222189973 is an apocalyptic number.

It is an amenable number.

222189973 is a deficient number, since it is larger than the sum of its proper divisors (1).

222189973 is an equidigital number, since it uses as much as digits as its factorization.

222189973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 43.

The square root of 222189973 is about 14906.0381389556. The cubic root of 222189973 is about 605.6775624970.

The spelling of 222189973 in words is "two hundred twenty-two million, one hundred eighty-nine thousand, nine hundred seventy-three".