201711217 has 2 divisors, whose sum is σ = 201711218. Its totient is φ = 201711216.

The previous prime is 201711197. The next prime is 201711227. The reversal of 201711217 is 712117102.

201711217 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134536801 + 67174416 = 11599^2 + 8196^2 .

It is a cyclic number.

It is not a de Polignac number, because 201711217 - 2¹¹ = 201709169 is a prime.

It is not a weakly prime, because it can be changed into another prime (201711227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100855608 + 100855609.

It is an arithmetic number, because the mean of its divisors is an integer number (100855609).

Almost surely, 2^201711217 is an apocalyptic number.

It is an amenable number.

201711217 is a deficient number, since it is larger than the sum of its proper divisors (1).

201711217 is an equidigital number, since it uses as much as digits as its factorization.

201711217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 201711217 is about 14202.5074194665. The cubic root of 201711217 is about 586.4666895823.

Adding to 201711217 its reverse (712117102), we get a palindrome (913828319).

The spelling of 201711217 in words is "two hundred one million, seven hundred eleven thousand, two hundred seventeen".