222100000217 has 2 divisors, whose sum is σ = 222100000218. Its totient is φ = 222100000216.

The previous prime is 222100000201. The next prime is 222100000237. The reversal of 222100000217 is 712000001222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209334615961 + 12765384256 = 457531^2 + 112984^2 .

It is a cyclic number.

It is not a de Polignac number, because 222100000217 - 2⁴ = 222100000201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222100000195 and 222100000204.

It is not a weakly prime, because it can be changed into another prime (222100000237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111050000108 + 111050000109.

It is an arithmetic number, because the mean of its divisors is an integer number (111050000109).

Almost surely, 2^222100000217 is an apocalyptic number.

It is an amenable number.

222100000217 is a deficient number, since it is larger than the sum of its proper divisors (1).

222100000217 is an equidigital number, since it uses as much as digits as its factorization.

222100000217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 17.

Adding to 222100000217 its reverse (712000001222), we get a palindrome (934100001439).

The spelling of 222100000217 in words is "two hundred twenty-two billion, one hundred million, two hundred seventeen", and thus it is an aban number.