100222217 has 2 divisors, whose sum is σ = 100222218. Its totient is φ = 100222216.

The previous prime is 100222183. The next prime is 100222229. The reversal of 100222217 is 712222001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75411856 + 24810361 = 8684^2 + 4981^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222217 - 2⁶ = 100222153 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100222195 and 100222204.

It is not a weakly prime, because it can be changed into another prime (100222267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50111108 + 50111109.

It is an arithmetic number, because the mean of its divisors is an integer number (50111109).

Almost surely, 2^100222217 is an apocalyptic number.

It is an amenable number.

100222217 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222217 is an equidigital number, since it uses as much as digits as its factorization.

100222217 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 17.

The square root of 100222217 is about 10011.1046842993. The cubic root of 100222217 is about 464.5024423199.

Adding to 100222217 its reverse (712222001), we get a palindrome (812444218).

The spelling of 100222217 in words is "one hundred million, two hundred twenty-two thousand, two hundred seventeen".