11123 has 6 divisors (see below), whose sum is σ = 12996.
Its totient is φ = 9492.
The previous prime is 11119. The next prime is 11131. The reversal of 11123 is 32111.
It is not a de Polignac number, because 11123 - 22 = 11119 is a prime.
It is a super-2 number, since 2×111232 = 247442258, which contains 22 as substring.
It is a Duffinian number.
It is a plaindrome in base 10 and base 15.
It is a nialpdrome in base 7.
It is a self number, because there is not a number n which added to its sum of digits gives 11123.
It is not an unprimeable number, because it can be changed into a prime (11113) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65 + ... + 162.
It is an arithmetic number, because the mean of its divisors is an integer number (2166).
211123 is an apocalyptic number.
11123 is a deficient number, since it is larger than the sum of its proper divisors (1873).
11123 is an equidigital number, since it uses as much as digits as its factorization.
11123 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 241 (or 234 counting only the distinct ones).
The product of its digits is 6, while the sum is 8.
The square root of 11123 is about 105.4656342132.
The cubic root of 11123 is about 22.3223876464.
Adding to 11123 its reverse (32111), we get a palindrome (43234).
The spelling of 11123 in words is "eleven thousand, one hundred twenty-three", and thus it is an iban number.