11218243 has 4 divisors (see below), whose sum is σ = 11292688. Its totient is φ = 11143800.

The previous prime is 11218241. The next prime is 11218247. The reversal of 11218243 is 34281211.

It is a happy number.

11218243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11218243 - 2¹ = 11218241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11218241) 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, 36996 + ... + 37297.

It is an arithmetic number, because the mean of its divisors is an integer number (2823172).

Almost surely, 2^11218243 is an apocalyptic number.

11218243 is a deficient number, since it is larger than the sum of its proper divisors (74445).

11218243 is an equidigital number, since it uses as much as digits as its factorization.

11218243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74444.

The product of its digits is 384, while the sum is 22.

The square root of 11218243 is about 3349.3645666007. The cubic root of 11218243 is about 223.8592001532.

Adding to 11218243 its reverse (34281211), we get a palindrome (45499454).

It can be divided in two parts, 112182 and 43, that added together give a square (112225 = 335²).

The spelling of 11218243 in words is "eleven million, two hundred eighteen thousand, two hundred forty-three".