111223 has 4 divisors (see below), whose sum is σ = 127120. Its totient is φ = 95328.

The previous prime is 111217. The next prime is 111227. The reversal of 111223 is 322111.

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 111223 - 2⁵ = 111191 is a prime.

It is the 334-th Hogben number.

It is a plaindrome in base 10.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111227) by changing a digit.

It is a nontrivial repunit in base 333.

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, 7938 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (31780).

2¹¹¹²²³ is an apocalyptic number.

111223 is a deficient number, since it is larger than the sum of its proper divisors (15897).

111223 is an equidigital number, since it uses as much as digits as its factorization.

111223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15896.

The product of its digits is 12, while the sum is 10.

The square root of 111223 is about 333.5011244359. The cubic root of 111223 is about 48.0911174334.

Adding to 111223 its reverse (322111), we get a palindrome (433334).

It can be divided in two parts, 111 and 223, that multiplied together give a triangular number (24753 = T₂₂₂).

The spelling of 111223 in words is "one hundred eleven thousand, two hundred twenty-three", and thus it is an iban number.