211017121207 has 2 divisors, whose sum is σ = 211017121208. Its totient is φ = 211017121206.

The previous prime is 211017121193. The next prime is 211017121219. The reversal of 211017121207 is 702121710112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211017121207 - 2¹⁹ = 211016596919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211017121277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105508560603 + 105508560604.

It is an arithmetic number, because the mean of its divisors is an integer number (105508560604).

Almost surely, 2^211017121207 is an apocalyptic number.

211017121207 is a deficient number, since it is larger than the sum of its proper divisors (1).

211017121207 is an equidigital number, since it uses as much as digits as its factorization.

211017121207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 392, while the sum is 25.

Adding to 211017121207 its reverse (702121710112), we get a palindrome (913138831319).

The spelling of 211017121207 in words is "two hundred eleven billion, seventeen million, one hundred twenty-one thousand, two hundred seven".