12225238 has 8 divisors (see below), whose sum is σ = 18369432. Its totient is φ = 6102096.

The previous prime is 12225223. The next prime is 12225247. The reversal of 12225238 is 83252221.

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

It is a congruent number.

It is an unprimeable number.

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, 3720 + ... + 6187.

It is an arithmetic number, because the mean of its divisors is an integer number (2296179).

Almost surely, 2^12225238 is an apocalyptic number.

12225238 is a deficient number, since it is larger than the sum of its proper divisors (6144194).

12225238 is an equidigital number, since it uses as much as digits as its factorization.

12225238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10526.

The product of its digits is 1920, while the sum is 25.

The square root of 12225238 is about 3496.4607819908. The cubic root of 12225238 is about 230.3663851703.

Adding to 12225238 its reverse (83252221), we get a palindrome (95477459).

The spelling of 12225238 in words is "twelve million, two hundred twenty-five thousand, two hundred thirty-eight".