12228173 has 4 divisors (see below), whose sum is σ = 12383040. Its totient is φ = 12073308.

The previous prime is 12228143. The next prime is 12228187. The reversal of 12228173 is 37182221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12228173 - 2¹⁴ = 12211789 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12228113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77315 + ... + 77472.

It is an arithmetic number, because the mean of its divisors is an integer number (3095760).

Almost surely, 2^12228173 is an apocalyptic number.

It is an amenable number.

12228173 is a deficient number, since it is larger than the sum of its proper divisors (154867).

12228173 is an equidigital number, since it uses as much as digits as its factorization.

12228173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154866.

The product of its digits is 1344, while the sum is 26.

The square root of 12228173 is about 3496.8804669305. The cubic root of 12228173 is about 230.3848189284.

The spelling of 12228173 in words is "twelve million, two hundred twenty-eight thousand, one hundred seventy-three".