222081773 has 2 divisors, whose sum is σ = 222081774. Its totient is φ = 222081772.

The previous prime is 222081731. The next prime is 222081809. The reversal of 222081773 is 377180222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111978724 + 110103049 = 10582^2 + 10493^2 .

It is a cyclic number.

It is not a de Polignac number, because 222081773 - 2¹² = 222077677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222081173) 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, 111040886 + 111040887.

It is an arithmetic number, because the mean of its divisors is an integer number (111040887).

Almost surely, 2^222081773 is an apocalyptic number.

It is an amenable number.

222081773 is a deficient number, since it is larger than the sum of its proper divisors (1).

222081773 is an equidigital number, since it uses as much as digits as its factorization.

222081773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 222081773 is about 14902.4082953058. The cubic root of 222081773 is about 605.5792307976.

The spelling of 222081773 in words is "two hundred twenty-two million, eighty-one thousand, seven hundred seventy-three".