12105223 has 8 divisors (see below), whose sum is σ = 13722800. Its totient is φ = 10585728.

The previous prime is 12105211. The next prime is 12105271. The reversal of 12105223 is 32250121.

12105223 is digitally balanced in base 2, 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 a de Polignac number, because none of the positive numbers 2^k-12105223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12105197 and 12105206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12105293) 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, 24258 + ... + 24751.

It is an arithmetic number, because the mean of its divisors is an integer number (1715350).

Almost surely, 2^12105223 is an apocalyptic number.

12105223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12105223 is a deficient number, since it is larger than the sum of its proper divisors (1617577).

12105223 is a wasteful number, since it uses less digits than its factorization.

12105223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49041.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 12105223 is about 3479.2560986510. The cubic root of 12105223 is about 229.6100702463.

Adding to 12105223 its reverse (32250121), we get a palindrome (44355344).

The spelling of 12105223 in words is "twelve million, one hundred five thousand, two hundred twenty-three".