211132091 has 2 divisors, whose sum is σ = 211132092. Its totient is φ = 211132090.

The previous prime is 211132081. The next prime is 211132109. The reversal of 211132091 is 190231112.

Together with next prime (211132109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211132091 - 2¹⁸ = 210869947 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211132081) 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, 105566045 + 105566046.

It is an arithmetic number, because the mean of its divisors is an integer number (105566046).

Almost surely, 2^211132091 is an apocalyptic number.

211132091 is a deficient number, since it is larger than the sum of its proper divisors (1).

211132091 is an equidigital number, since it uses as much as digits as its factorization.

211132091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 20.

The square root of 211132091 is about 14530.3850946904. The cubic root of 211132091 is about 595.4583865007.

The spelling of 211132091 in words is "two hundred eleven million, one hundred thirty-two thousand, ninety-one".