211321330220017 has 2 divisors, whose sum is σ = 211321330220018. Its totient is φ = 211321330220016.

The previous prime is 211321330220009. The next prime is 211321330220171. The reversal of 211321330220017 is 710022033123112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 135267041550096 + 76054288669921 = 11630436^2 + 8720911^2 .

It is a cyclic number.

It is not a de Polignac number, because 211321330220017 - 2³ = 211321330220009 is a prime.

It is not a weakly prime, because it can be changed into another prime (211321330220317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660665110008 + 105660665110009.

It is an arithmetic number, because the mean of its divisors is an integer number (105660665110009).

Almost surely, 2^{211321330220017} is an apocalyptic number.

It is an amenable number.

211321330220017 is a deficient number, since it is larger than the sum of its proper divisors (1).

211321330220017 is an equidigital number, since it uses as much as digits as its factorization.

211321330220017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

Adding to 211321330220017 its reverse (710022033123112), we get a palindrome (921343363343129).

The spelling of 211321330220017 in words is "two hundred eleven trillion, three hundred twenty-one billion, three hundred thirty million, two hundred twenty thousand, seventeen".