211867 has 2 divisors, whose sum is σ = 211868. Its totient is φ = 211866.

The previous prime is 211859. The next prime is 211873. The reversal of 211867 is 768112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 211867 - 2³ = 211859 is a prime.

It is not a weakly prime, because it can be changed into another prime (211817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105933 + 105934.

It is an arithmetic number, because the mean of its divisors is an integer number (105934).

2²¹¹⁸⁶⁷ is an apocalyptic number.

211867 is a deficient number, since it is larger than the sum of its proper divisors (1).

211867 is an equidigital number, since it uses as much as digits as its factorization.

211867 is an evil number, because the sum of its binary digits is even.

The product of its digits is 672, while the sum is 25.

The square root of 211867 is about 460.2901258989. The cubic root of 211867 is about 59.6148477339.

Adding to 211867 its reverse (768112), we get a palindrome (979979).

The spelling of 211867 in words is "two hundred eleven thousand, eight hundred sixty-seven".