220217 has 2 divisors, whose sum is σ = 220218. Its totient is φ = 220216.

The previous prime is 220189. The next prime is 220243. The reversal of 220217 is 712022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 219961 + 256 = 469^2 + 16^2 .

It is a cyclic number.

It is not a de Polignac number, because 220217 - 2¹⁶ = 154681 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110108 + 110109.

It is an arithmetic number, because the mean of its divisors is an integer number (110109).

2²²⁰²¹⁷ is an apocalyptic number.

It is an amenable number.

220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

220217 is an equidigital number, since it uses as much as digits as its factorization.

220217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 220217 is about 469.2728417456. The cubic root of 220217 is about 60.3879491476.

Adding to 220217 its reverse (712022), we get a palindrome (932239).

The spelling of 220217 in words is "two hundred twenty thousand, two hundred seventeen", and thus it is an iban number.