12226772 has 24 divisors (see below), whose sum is σ = 22267392. Its totient is φ = 5868000.

The previous prime is 12226771. The next prime is 12226787. The reversal of 12226772 is 27762221.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12226771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18398 + ... + 19050.

It is an arithmetic number, because the mean of its divisors is an integer number (927808).

Almost surely, 2^12226772 is an apocalyptic number.

It is an amenable number.

12226772 is a deficient number, since it is larger than the sum of its proper divisors (10040620).

12226772 is a wasteful number, since it uses less digits than its factorization.

12226772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 837 counting only the distinct ones).

The product of its digits is 4704, while the sum is 29.

The square root of 12226772 is about 3496.6801397897. The cubic root of 12226772 is about 230.3760200818.

Adding to 12226772 its reverse (27762221), we get a palindrome (39988993).

The spelling of 12226772 in words is "twelve million, two hundred twenty-six thousand, seven hundred seventy-two".