12021224 has 16 divisors (see below), whose sum is σ = 23726400. Its totient is φ = 5694192.

The previous prime is 12021187. The next prime is 12021259. The reversal of 12021224 is 42212021.

It is a junction number, because it is equal to n+sod(n) for n = 12021199 and 12021208.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39392 + ... + 39695.

It is an arithmetic number, because the mean of its divisors is an integer number (1482900).

Almost surely, 2^12021224 is an apocalyptic number.

It is an amenable number.

12021224 is a deficient number, since it is larger than the sum of its proper divisors (11705176).

12021224 is a wasteful number, since it uses less digits than its factorization.

12021224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79112 (or 79108 counting only the distinct ones).

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

The square root of 12021224 is about 3467.1636823202. The cubic root of 12021224 is about 229.0777435420.

Adding to 12021224 its reverse (42212021), we get a palindrome (54233245).

The spelling of 12021224 in words is "twelve million, twenty-one thousand, two hundred twenty-four".