12507223 has 4 divisors (see below), whose sum is σ = 13242960. Its totient is φ = 11771488.

The previous prime is 12507203. The next prime is 12507241. The reversal of 12507223 is 32270521.

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

It is a cyclic number.

It is not a de Polignac number, because 12507223 - 2⁵ = 12507191 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12507194 and 12507203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12507203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367843 + ... + 367876.

It is an arithmetic number, because the mean of its divisors is an integer number (3310740).

Almost surely, 2^12507223 is an apocalyptic number.

12507223 is a deficient number, since it is larger than the sum of its proper divisors (735737).

12507223 is an equidigital number, since it uses as much as digits as its factorization.

12507223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735736.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 12507223 is about 3536.5552448675. Note that the first 3 decimals coincide. The cubic root of 12507223 is about 232.1241346681.

Adding to 12507223 its reverse (32270521), we get a palindrome (44777744).

The spelling of 12507223 in words is "twelve million, five hundred seven thousand, two hundred twenty-three".