12231123 has 4 divisors (see below), whose sum is σ = 16308168. Its totient is φ = 8154080.

The previous prime is 12231083. The next prime is 12231133. The reversal of 12231123 is 32113221.

12231123 is digitally balanced in base 3, 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 a cyclic number.

It is not a de Polignac number, because 12231123 - 2⁶ = 12231059 is a prime.

It is a super-2 number, since 2×12231123² = 299200739682258, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12231133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2038518 + ... + 2038523.

It is an arithmetic number, because the mean of its divisors is an integer number (4077042).

Almost surely, 2^12231123 is an apocalyptic number.

12231123 is a deficient number, since it is larger than the sum of its proper divisors (4077045).

12231123 is an equidigital number, since it uses as much as digits as its factorization.

12231123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077044.

The product of its digits is 72, while the sum is 15.

The square root of 12231123 is about 3497.3022460176. The cubic root of 12231123 is about 230.4033439245.

Adding to 12231123 its reverse (32113221), we get a palindrome (44344344).

It can be divided in two parts, 1223 and 1123, that added together give a triangular number (2346 = T₆₈).

The spelling of 12231123 in words is "twelve million, two hundred thirty-one thousand, one hundred twenty-three".