12175221 has 8 divisors (see below), whose sum is σ = 16328160. Its totient is φ = 8069552.

The previous prime is 12175201. The next prime is 12175223. The reversal of 12175221 is 12257121.

12175221 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 12175221 - 2²³ = 3786613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12175223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11211 + ... + 12248.

It is an arithmetic number, because the mean of its divisors is an integer number (2041020).

Almost surely, 2^12175221 is an apocalyptic number.

It is an amenable number.

12175221 is a deficient number, since it is larger than the sum of its proper divisors (4152939).

12175221 is a wasteful number, since it uses less digits than its factorization.

12175221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23635.

The product of its digits is 280, while the sum is 21.

The square root of 12175221 is about 3489.3009328517. The cubic root of 12175221 is about 230.0517904796.

The spelling of 12175221 in words is "twelve million, one hundred seventy-five thousand, two hundred twenty-one".