211312110689 has 2 divisors, whose sum is σ = 211312110690. Its totient is φ = 211312110688.

The previous prime is 211312110677. The next prime is 211312110707. The reversal of 211312110689 is 986011213112.

It is a happy number.

211312110689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209794229089 + 1517881600 = 458033^2 + 38960^2 .

It is a cyclic number.

It is not a de Polignac number, because 211312110689 - 2³² = 207017143393 is a prime.

It is not a weakly prime, because it can be changed into another prime (211312110619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105656055344 + 105656055345.

It is an arithmetic number, because the mean of its divisors is an integer number (105656055345).

Almost surely, 2^211312110689 is an apocalyptic number.

It is an amenable number.

211312110689 is a deficient number, since it is larger than the sum of its proper divisors (1).

211312110689 is an equidigital number, since it uses as much as digits as its factorization.

211312110689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 35.

The spelling of 211312110689 in words is "two hundred eleven billion, three hundred twelve million, one hundred ten thousand, six hundred eighty-nine".