12316212 has 36 divisors (see below), whose sum is σ = 32288256. Its totient is φ = 4105080.

The previous prime is 12316181. The next prime is 12316219. The reversal of 12316212 is 21261321.

12316212 is a `hidden beast` number, since 12 + 31 + 621 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12316219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5364 + ... + 7307.

It is an arithmetic number, because the mean of its divisors is an integer number (896896).

Almost surely, 2^12316212 is an apocalyptic number.

12316212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12316212 is an abundant number, since it is smaller than the sum of its proper divisors (19972044).

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

12316212 is a wasteful number, since it uses less digits than its factorization.

12316212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12690 (or 12676 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12316212 is about 3509.4461101433. The cubic root of 12316212 is about 230.9363967243.

Adding to 12316212 its reverse (21261321), we get a palindrome (33577533).

The spelling of 12316212 in words is "twelve million, three hundred sixteen thousand, two hundred twelve".