211301317321 has 2 divisors, whose sum is σ = 211301317322. Its totient is φ = 211301317320.

The previous prime is 211301317319. The next prime is 211301317343. The reversal of 211301317321 is 123713103112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209635779600 + 1665537721 = 457860^2 + 40811^2 .

It is a cyclic number.

It is not a de Polignac number, because 211301317321 - 2¹ = 211301317319 is a prime.

Together with 211301317319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211301317361) 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, 105650658660 + 105650658661.

It is an arithmetic number, because the mean of its divisors is an integer number (105650658661).

Almost surely, 2^211301317321 is an apocalyptic number.

It is an amenable number.

211301317321 is a deficient number, since it is larger than the sum of its proper divisors (1).

211301317321 is an equidigital number, since it uses as much as digits as its factorization.

211301317321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The spelling of 211301317321 in words is "two hundred eleven billion, three hundred one million, three hundred seventeen thousand, three hundred twenty-one".