211484242091 has 2 divisors, whose sum is σ = 211484242092. Its totient is φ = 211484242090.

The previous prime is 211484242049. The next prime is 211484242093. The reversal of 211484242091 is 190242484112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211484242091 - 2¹⁸ = 211483979947 is a prime.

Together with 211484242093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (211484242093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105742121045 + 105742121046.

It is an arithmetic number, because the mean of its divisors is an integer number (105742121046).

Almost surely, 2^211484242091 is an apocalyptic number.

211484242091 is a deficient number, since it is larger than the sum of its proper divisors (1).

211484242091 is an equidigital number, since it uses as much as digits as its factorization.

211484242091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 211484242091 in words is "two hundred eleven billion, four hundred eighty-four million, two hundred forty-two thousand, ninety-one".