211002312217 has 2 divisors, whose sum is σ = 211002312218. Its totient is φ = 211002312216.

The previous prime is 211002312181. The next prime is 211002312221. The reversal of 211002312217 is 712213200112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197754532416 + 13247779801 = 444696^2 + 115099^2 .

It is a cyclic number.

It is not a de Polignac number, because 211002312217 - 2¹⁹ = 211001787929 is a prime.

It is not a weakly prime, because it can be changed into another prime (211002313217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105501156108 + 105501156109.

It is an arithmetic number, because the mean of its divisors is an integer number (105501156109).

Almost surely, 2^211002312217 is an apocalyptic number.

It is an amenable number.

211002312217 is a deficient number, since it is larger than the sum of its proper divisors (1).

211002312217 is an equidigital number, since it uses as much as digits as its factorization.

211002312217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 211002312217 its reverse (712213200112), we get a palindrome (923215512329).

The spelling of 211002312217 in words is "two hundred eleven billion, two million, three hundred twelve thousand, two hundred seventeen".