211330042291 has 2 divisors, whose sum is σ = 211330042292. Its totient is φ = 211330042290.

The previous prime is 211330042277. The next prime is 211330042349. The reversal of 211330042291 is 192240033112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211330042291 - 2⁷ = 211330042163 is a prime.

It is not a weakly prime, because it can be changed into another prime (211330042241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105665021145 + 105665021146.

It is an arithmetic number, because the mean of its divisors is an integer number (105665021146).

Almost surely, 2^211330042291 is an apocalyptic number.

211330042291 is a deficient number, since it is larger than the sum of its proper divisors (1).

211330042291 is an equidigital number, since it uses as much as digits as its factorization.

211330042291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The spelling of 211330042291 in words is "two hundred eleven billion, three hundred thirty million, forty-two thousand, two hundred ninety-one".