12722168 has 8 divisors (see below), whose sum is σ = 23854080. Its totient is φ = 6361080.

The previous prime is 12722167. The next prime is 12722179. The reversal of 12722168 is 86122721.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12722168.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 795128 + ... + 795143.

It is an arithmetic number, because the mean of its divisors is an integer number (2981760).

Almost surely, 2^12722168 is an apocalyptic number.

It is an amenable number.

12722168 is a deficient number, since it is larger than the sum of its proper divisors (11131912).

12722168 is a wasteful number, since it uses less digits than its factorization.

12722168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590277 (or 1590273 counting only the distinct ones).

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

The square root of 12722168 is about 3566.8148255832. The cubic root of 12722168 is about 233.4463253200.

Adding to 12722168 its reverse (86122721), we get a palindrome (98844889).

The spelling of 12722168 in words is "twelve million, seven hundred twenty-two thousand, one hundred sixty-eight".