12102223 has 4 divisors (see below), whose sum is σ = 13831120. Its totient is φ = 10373328.

The previous prime is 12102199. The next prime is 12102239. The reversal of 12102223 is 32220121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12102223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12102263) 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, 864438 + ... + 864451.

It is an arithmetic number, because the mean of its divisors is an integer number (3457780).

Almost surely, 2^12102223 is an apocalyptic number.

12102223 is a deficient number, since it is larger than the sum of its proper divisors (1728897).

12102223 is an equidigital number, since it uses as much as digits as its factorization.

12102223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728896.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12102223 is about 3478.8249452940. The cubic root of 12102223 is about 229.5911008278.

Adding to 12102223 its reverse (32220121), we get a palindrome (44322344).

The spelling of 12102223 in words is "twelve million, one hundred two thousand, two hundred twenty-three".