12224655 has 32 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 6435360.

The previous prime is 12224651. The next prime is 12224669. The reversal of 12224655 is 55642221.

12224655 is a `hidden beast` number, since 1 + 2 + 2 + 2 + 4 + 655 = 666.

12224655 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12224655 - 2² = 12224651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224651) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10660 + ... + 11750.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 2^12224655 is an apocalyptic number.

12224655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12224655 is a deficient number, since it is larger than the sum of its proper divisors (9790065).

12224655 is a wasteful number, since it uses less digits than its factorization.

12224655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1182 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 12224655 is about 3496.3774109784. The cubic root of 12224655 is about 230.3627231902.

Adding to 12224655 its reverse (55642221), we get a palindrome (67866876).

The spelling of 12224655 in words is "twelve million, two hundred twenty-four thousand, six hundred fifty-five".