211097 has 2 divisors, whose sum is σ = 211098. Its totient is φ = 211096.

The previous prime is 211093. The next prime is 211129. The reversal of 211097 is 790112.

211097 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., 177241 + 33856 = 421^2 + 184^2 .

It is a cyclic number.

It is not a de Polignac number, because 211097 - 2² = 211093 is a prime.

It is a plaindrome in base 11 and base 16.

It is not a weakly prime, because it can be changed into another prime (211093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105548 + 105549.

It is an arithmetic number, because the mean of its divisors is an integer number (105549).

2²¹¹⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

211097 is a deficient number, since it is larger than the sum of its proper divisors (1).

211097 is an equidigital number, since it uses as much as digits as its factorization.

211097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 211097 is about 459.4529355658. The cubic root of 211097 is about 59.5425395482.

The spelling of 211097 in words is "two hundred eleven thousand, ninety-seven".