12145223 has 8 divisors (see below), whose sum is σ = 12564480. Its totient is φ = 11732760.

The previous prime is 12145201. The next prime is 12145241. The reversal of 12145223 is 32254121.

12145223 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 not a de Polignac number, because 12145223 - 2¹⁰ = 12144199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12145195 and 12145204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12145723) 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, 2078 + ... + 5348.

It is an arithmetic number, because the mean of its divisors is an integer number (1570560).

Almost surely, 2^12145223 is an apocalyptic number.

12145223 is a deficient number, since it is larger than the sum of its proper divisors (419257).

12145223 is an equidigital number, since it uses as much as digits as its factorization.

12145223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397.

The product of its digits is 480, while the sum is 20.

The square root of 12145223 is about 3484.9997130559. Note that the first 3 decimals coincide. The cubic root of 12145223 is about 229.8626968784.

Adding to 12145223 its reverse (32254121), we get a palindrome (44399344).

The spelling of 12145223 in words is "twelve million, one hundred forty-five thousand, two hundred twenty-three".