12226718 has 32 divisors (see below), whose sum is σ = 21665280. Its totient is φ = 5067360.

The previous prime is 12226703. The next prime is 12226727. The reversal of 12226718 is 81762221.

12226718 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a plaindrome in base 5.

It is a zygodrome in base 5.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87893 + ... + 88031.

It is an arithmetic number, because the mean of its divisors is an integer number (677040).

Almost surely, 2^12226718 is an apocalyptic number.

12226718 is a deficient number, since it is larger than the sum of its proper divisors (9438562).

12226718 is a wasteful number, since it uses less digits than its factorization.

12226718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312.

The product of its digits is 2688, while the sum is 29.

The square root of 12226718 is about 3496.6724181713. The cubic root of 12226718 is about 230.3756809265.

Adding to 12226718 its reverse (81762221), we get a palindrome (93988939).

The spelling of 12226718 in words is "twelve million, two hundred twenty-six thousand, seven hundred eighteen".