211210202112197 has 2 divisors, whose sum is σ = 211210202112198. Its totient is φ = 211210202112196.

The previous prime is 211210202112179. The next prime is 211210202112229. The reversal of 211210202112197 is 791211202012112.

Together with previous prime (211210202112179) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (211210202112229) can be obtained adding 211210202112197 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140126856075361 + 71083346036836 = 11837519^2 + 8431094^2 .

It is a cyclic number.

It is not a de Polignac number, because 211210202112197 - 2²⁸ = 211209933676741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211210202102197) 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, 105605101056098 + 105605101056099.

It is an arithmetic number, because the mean of its divisors is an integer number (105605101056099).

Almost surely, 2^{211210202112197} is an apocalyptic number.

It is an amenable number.

211210202112197 is a deficient number, since it is larger than the sum of its proper divisors (1).

211210202112197 is an equidigital number, since it uses as much as digits as its factorization.

211210202112197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 32.

The spelling of 211210202112197 in words is "two hundred eleven trillion, two hundred ten billion, two hundred two million, one hundred twelve thousand, one hundred ninety-seven".