12111224 has 16 divisors (see below), whose sum is σ = 22777200. Its totient is φ = 6037312.

The previous prime is 12111221. The next prime is 12111263. The reversal of 12111224 is 42211121.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 12111199 and 12111208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12111221) 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, 764 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (1423575).

Almost surely, 2^12111224 is an apocalyptic number.

It is an amenable number.

12111224 is a deficient number, since it is larger than the sum of its proper divisors (10665976).

12111224 is a wasteful number, since it uses less digits than its factorization.

12111224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582 (or 4578 counting only the distinct ones).

The product of its digits is 32, while the sum is 14.

The square root of 12111224 is about 3480.1183887908. The cubic root of 12111224 is about 229.6480060036.

Adding to 12111224 its reverse (42211121), we get a palindrome (54322345).

The spelling of 12111224 in words is "twelve million, one hundred eleven thousand, two hundred twenty-four".