12644122 has 8 divisors (see below), whose sum is σ = 19031796. Its totient is φ = 6300192.

The previous prime is 12644119. The next prime is 12644129. The reversal of 12644122 is 22144621.

It is a happy number.

12644122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 10055241 + 2588881 = 3171^2 + 1609^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12644093 and 12644102.

It is not an unprimeable number, because it can be changed into a prime (12644129) 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, 10203 + ... + 11374.

Almost surely, 2^12644122 is an apocalyptic number.

12644122 is a deficient number, since it is larger than the sum of its proper divisors (6387674).

12644122 is a wasteful number, since it uses less digits than its factorization.

12644122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21872.

The product of its digits is 768, while the sum is 22.

The square root of 12644122 is about 3555.8574212136. The cubic root of 12644122 is about 232.9679756069.

Adding to 12644122 its reverse (22144621), we get a palindrome (34788743).

The spelling of 12644122 in words is "twelve million, six hundred forty-four thousand, one hundred twenty-two".