210332212091 has 2 divisors, whose sum is σ = 210332212092. Its totient is φ = 210332212090.

The previous prime is 210332212019. The next prime is 210332212093. The reversal of 210332212091 is 190212233012.

Together with previous prime (210332212019) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 210332212091 - 2²⁶ = 210265103227 is a prime.

It is a Sophie Germain prime.

Together with 210332212093, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210332212091.

It is not a weakly prime, because it can be changed into another prime (210332212093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105166106045 + 105166106046.

It is an arithmetic number, because the mean of its divisors is an integer number (105166106046).

Almost surely, 2^210332212091 is an apocalyptic number.

210332212091 is a deficient number, since it is larger than the sum of its proper divisors (1).

210332212091 is an equidigital number, since it uses as much as digits as its factorization.

210332212091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The spelling of 210332212091 in words is "two hundred ten billion, three hundred thirty-two million, two hundred twelve thousand, ninety-one".