211848811 has 2 divisors, whose sum is σ = 211848812. Its totient is φ = 211848810.

The previous prime is 211848797. The next prime is 211848821. The reversal of 211848811 is 118848112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211848811 - 2⁵ = 211848779 is a prime.

It is a super-2 number, since 2×211848811² = 89759837444227442, which contains 22 as substring.

It is equal to p_11698027 and since 211848811 and 11698027 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (211848821) 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, 105924405 + 105924406.

It is an arithmetic number, because the mean of its divisors is an integer number (105924406).

Almost surely, 2^211848811 is an apocalyptic number.

211848811 is a deficient number, since it is larger than the sum of its proper divisors (1).

211848811 is an equidigital number, since it uses as much as digits as its factorization.

211848811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4096, while the sum is 34.

The square root of 211848811 is about 14555.0270010055. The cubic root of 211848811 is about 596.1314168640.

The spelling of 211848811 in words is "two hundred eleven million, eight hundred forty-eight thousand, eight hundred eleven".