12120224 has 12 divisors (see below), whose sum is σ = 23861754. Its totient is φ = 6060096.

The previous prime is 12120223. The next prime is 12120239. The reversal of 12120224 is 42202121.

It can be written as a sum of positive squares in only one way, i.e., 9120400 + 2999824 = 3020^2 + 1732^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12120199 and 12120208.

It is not an unprimeable number, because it can be changed into a prime (12120223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189347 + ... + 189410.

Almost surely, 2^12120224 is an apocalyptic number.

It is an amenable number.

12120224 is a deficient number, since it is larger than the sum of its proper divisors (11741530).

12120224 is an equidigital number, since it uses as much as digits as its factorization.

12120224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378767 (or 378759 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 12120224 is about 3481.4112081166. The cubic root of 12120224 is about 229.7048766745.

Adding to 12120224 its reverse (42202121), we get a palindrome (54322345).

The spelling of 12120224 in words is "twelve million, one hundred twenty thousand, two hundred twenty-four".