211000841 has 2 divisors, whose sum is σ = 211000842. Its totient is φ = 211000840.

The previous prime is 211000819. The next prime is 211000843. The reversal of 211000841 is 148000112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188238400 + 22762441 = 13720^2 + 4771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211000841 is a prime.

It is a Sophie Germain prime.

Together with 211000843, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (211000843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500420 + 105500421.

It is an arithmetic number, because the mean of its divisors is an integer number (105500421).

Almost surely, 2^211000841 is an apocalyptic number.

It is an amenable number.

211000841 is a deficient number, since it is larger than the sum of its proper divisors (1).

211000841 is an equidigital number, since it uses as much as digits as its factorization.

211000841 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 211000841 is about 14525.8679947189. The cubic root of 211000841 is about 595.3349722703.

Adding to 211000841 its reverse (148000112), we get a palindrome (359000953).

The spelling of 211000841 in words is "two hundred eleven million, eight hundred forty-one", and thus it is an aban number.