12966822 has 48 divisors (see below), whose sum is σ = 31382208. Its totient is φ = 3835440.

The previous prime is 12966817. The next prime is 12966847. The reversal of 12966822 is 22866921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7753 + ... + 9275.

It is an arithmetic number, because the mean of its divisors is an integer number (653796).

Almost surely, 2^12966822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12966822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15691104).

12966822 is an abundant number, since it is smaller than the sum of its proper divisors (18415386).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12966822 is a wasteful number, since it uses less digits than its factorization.

12966822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1585 (or 1582 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 12966822 is about 3600.9473753444. The cubic root of 12966822 is about 234.9332660971.

Subtracting 12966822 from its reverse (22866921), we obtain a palindrome (9900099).

It can be divided in two parts, 1296 and 6822, that added together give a palindrome (8118).

The spelling of 12966822 in words is "twelve million, nine hundred sixty-six thousand, eight hundred twenty-two".