12102238 has 4 divisors (see below), whose sum is σ = 18153360. Its totient is φ = 6051118.

The previous prime is 12102199. The next prime is 12102239. The reversal of 12102238 is 83220121.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102239) 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 as a sum of consecutive naturals, namely, 3025558 + ... + 3025561.

It is an arithmetic number, because the mean of its divisors is an integer number (4538340).

Almost surely, 2^12102238 is an apocalyptic number.

12102238 is a deficient number, since it is larger than the sum of its proper divisors (6051122).

12102238 is an equidigital number, since it uses as much as digits as its factorization.

12102238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6051121.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12102238 is about 3478.8271011937. The cubic root of 12102238 is about 229.5911956827.

Adding to 12102238 its reverse (83220121), we get a palindrome (95322359).

The spelling of 12102238 in words is "twelve million, one hundred two thousand, two hundred thirty-eight".