2118203 has 4 divisors (see below), whose sum is σ = 2127528. Its totient is φ = 2108880.

The previous prime is 2118187. The next prime is 2118209. The reversal of 2118203 is 3028112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2118203 - 2⁴ = 2118187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2118209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4313 + ... + 4778.

It is an arithmetic number, because the mean of its divisors is an integer number (531882).

2^2118203 is an apocalyptic number.

2118203 is a deficient number, since it is larger than the sum of its proper divisors (9325).

2118203 is an equidigital number, since it uses as much as digits as its factorization.

2118203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9324.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2118203 is about 1455.4047546988. The cubic root of 2118203 is about 128.4268586069.

Subtracting 2118203 from its reverse (3028112), we obtain a palindrome (909909).

The spelling of 2118203 in words is "two million, one hundred eighteen thousand, two hundred three".