12224145 has 8 divisors (see below), whose sum is σ = 19558656. Its totient is φ = 6519536.

The previous prime is 12224129. The next prime is 12224153. The reversal of 12224145 is 54142221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12224145 - 2⁴ = 12224129 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407457 + ... + 407486.

It is an arithmetic number, because the mean of its divisors is an integer number (2444832).

Almost surely, 2^12224145 is an apocalyptic number.

12224145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12224145 is a deficient number, since it is larger than the sum of its proper divisors (7334511).

12224145 is an equidigital number, since it uses as much as digits as its factorization.

12224145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814951.

The product of its digits is 640, while the sum is 21.

The square root of 12224145 is about 3496.3044775877. The cubic root of 12224145 is about 230.3595196472.

Adding to 12224145 its reverse (54142221), we get a palindrome (66366366).

The spelling of 12224145 in words is "twelve million, two hundred twenty-four thousand, one hundred forty-five".