11223 has 12 divisors (see below), whose sum is σ = 17160. Its totient is φ = 7056.

The previous prime is 11213. The next prime is 11239. The reversal of 11223 is 32211.

It is a happy number.

It is not a de Polignac number, because 11223 - 2⁶ = 11159 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

11223 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240 + ... + 282.

It is an arithmetic number, because the mean of its divisors is an integer number (1430).

2¹¹²²³ is an apocalyptic number.

11223 is a deficient number, since it is larger than the sum of its proper divisors (5937).

11223 is a wasteful number, since it uses less digits than its factorization.

11223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78 (or 75 counting only the distinct ones).

The product of its digits is 12, while the sum is 9.

The square root of 11223 is about 105.9386614981. The cubic root of 11223 is about 22.3890837542.

Subtracting from 11223 its product of digits (12), we obtain a palindrome (11211).

Adding to 11223 its reverse (32211), we get a palindrome (43434).

The spelling of 11223 in words is "eleven thousand, two hundred twenty-three", and thus it is an iban number.