211876330109 has 2 divisors, whose sum is σ = 211876330110. Its totient is φ = 211876330108.

The previous prime is 211876330091. The next prime is 211876330117. The reversal of 211876330109 is 901033678112.

211876330109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (211876330091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 209349257209 + 2527072900 = 457547^2 + 50270^2 .

It is a cyclic number.

It is not a de Polignac number, because 211876330109 - 2²⁸ = 211607894653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211876330139) 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, 105938165054 + 105938165055.

It is an arithmetic number, because the mean of its divisors is an integer number (105938165055).

Almost surely, 2^211876330109 is an apocalyptic number.

It is an amenable number.

211876330109 is a deficient number, since it is larger than the sum of its proper divisors (1).

211876330109 is an equidigital number, since it uses as much as digits as its factorization.

211876330109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The spelling of 211876330109 in words is "two hundred eleven billion, eight hundred seventy-six million, three hundred thirty thousand, one hundred nine".