12115224 has 64 divisors (see below), whose sum is σ = 36720000. Its totient is φ = 3670560.

The previous prime is 12115223. The next prime is 12115231. The reversal of 12115224 is 42251121.

12115224 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12115197 and 12115206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (573750).

Almost surely, 2^12115224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12115224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18360000).

12115224 is an abundant number, since it is smaller than the sum of its proper divisors (24604776).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12115224 is a wasteful number, since it uses less digits than its factorization.

12115224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5125 (or 5115 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 12115224 is about 3480.6930344401. The cubic root of 12115224 is about 229.6732853344.

Adding to 12115224 its reverse (42251121), we get a palindrome (54366345).

The spelling of 12115224 in words is "twelve million, one hundred fifteen thousand, two hundred twenty-four".