222111010217 has 2 divisors, whose sum is σ = 222111010218. Its totient is φ = 222111010216.

The previous prime is 222111010169. The next prime is 222111010241. The reversal of 222111010217 is 712010111222.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194548037776 + 27562972441 = 441076^2 + 166021^2 .

It is a cyclic number.

It is not a de Polignac number, because 222111010217 - 2¹² = 222111006121 is a prime.

It is not a weakly prime, because it can be changed into another prime (222111010117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111055505108 + 111055505109.

It is an arithmetic number, because the mean of its divisors is an integer number (111055505109).

Almost surely, 2^222111010217 is an apocalyptic number.

It is an amenable number.

222111010217 is a deficient number, since it is larger than the sum of its proper divisors (1).

222111010217 is an equidigital number, since it uses as much as digits as its factorization.

222111010217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 222111010217 its reverse (712010111222), we get a palindrome (934121121439).

The spelling of 222111010217 in words is "two hundred twenty-two billion, one hundred eleven million, ten thousand, two hundred seventeen".