201011111110217 has 2 divisors, whose sum is σ = 201011111110218. Its totient is φ = 201011111110216.

The previous prime is 201011111110111. The next prime is 201011111110247. The reversal of 201011111110217 is 712011111110102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188624294211136 + 12386816899081 = 13734056^2 + 3519491^2 .

It is a cyclic number.

It is not a de Polignac number, because 201011111110217 - 2¹⁴ = 201011111093833 is a prime.

It is not a weakly prime, because it can be changed into another prime (201011111110247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505555555108 + 100505555555109.

It is an arithmetic number, because the mean of its divisors is an integer number (100505555555109).

Almost surely, 2^{201011111110217} is an apocalyptic number.

It is an amenable number.

201011111110217 is a deficient number, since it is larger than the sum of its proper divisors (1).

201011111110217 is an equidigital number, since it uses as much as digits as its factorization.

201011111110217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 20.

Adding to 201011111110217 its reverse (712011111110102), we get a palindrome (913022222220319).

The spelling of 201011111110217 in words is "two hundred one trillion, eleven billion, one hundred eleven million, one hundred ten thousand, two hundred seventeen".