222443220217 has 2 divisors, whose sum is σ = 222443220218. Its totient is φ = 222443220216.

The previous prime is 222443220193. The next prime is 222443220283. The reversal of 222443220217 is 712022344222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 137655098361 + 84788121856 = 371019^2 + 291184^2 .

It is a cyclic number.

It is not a de Polignac number, because 222443220217 - 2⁷ = 222443220089 is a prime.

It is not a weakly prime, because it can be changed into another prime (222443226217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111221610108 + 111221610109.

It is an arithmetic number, because the mean of its divisors is an integer number (111221610109).

Almost surely, 2^222443220217 is an apocalyptic number.

It is an amenable number.

222443220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

222443220217 is an equidigital number, since it uses as much as digits as its factorization.

222443220217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 31.

Adding to 222443220217 its reverse (712022344222), we get a palindrome (934465564439).

The spelling of 222443220217 in words is "two hundred twenty-two billion, four hundred forty-three million, two hundred twenty thousand, two hundred seventeen".