211103 has 4 divisors (see below), whose sum is σ = 212040. Its totient is φ = 210168.

The previous prime is 211097. The next prime is 211129. The reversal of 211103 is 301112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 211103 - 2⁶ = 211039 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101 + ... + 657.

It is an arithmetic number, because the mean of its divisors is an integer number (53010).

2²¹¹¹⁰³ is an apocalyptic number.

211103 is a deficient number, since it is larger than the sum of its proper divisors (937).

211103 is an equidigital number, since it uses as much as digits as its factorization.

211103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936.

The product of its (nonzero) digits is 6, while the sum is 8.

The square root of 211103 is about 459.4594650238. The cubic root of 211103 is about 59.5431036678.

Adding to 211103 its reverse (301112), we get a palindrome (512215).

Subtracting 211103 from its reverse (301112), we obtain a palindrome (90009).

The spelling of 211103 in words is "two hundred eleven thousand, one hundred three", and thus it is an iban number.