211297 has 2 divisors, whose sum is σ = 211298. Its totient is φ = 211296.

The previous prime is 211291. The next prime is 211313. The reversal of 211297 is 792112.

211297 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197136 + 14161 = 444^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 211297 - 2¹¹ = 209249 is a prime.

It is not a weakly prime, because it can be changed into another prime (211291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105648 + 105649.

It is an arithmetic number, because the mean of its divisors is an integer number (105649).

2²¹¹²⁹⁷ is an apocalyptic number.

It is an amenable number.

211297 is a deficient number, since it is larger than the sum of its proper divisors (1).

211297 is an equidigital number, since it uses as much as digits as its factorization.

211297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 22.

The square root of 211297 is about 459.6705341873. The cubic root of 211297 is about 59.5613377770.

It can be divided in two parts, 2112 and 97, that added together give a square (2209 = 47²).

The spelling of 211297 in words is "two hundred eleven thousand, two hundred ninety-seven".