12106812 has 12 divisors (see below), whose sum is σ = 28249256. Its totient is φ = 4035600.

The previous prime is 12106811. The next prime is 12106817. The reversal of 12106812 is 21860121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12106811) 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 in 3 ways as a sum of consecutive naturals, for example, 504439 + ... + 504462.

Almost surely, 2^12106812 is an apocalyptic number.

12106812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12106812 is an abundant number, since it is smaller than the sum of its proper divisors (16142444).

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

12106812 is a wasteful number, since it uses less digits than its factorization.

12106812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008908 (or 1008906 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 12106812 is about 3479.4844445693. The cubic root of 12106812 is about 229.6201164453.

Adding to 12106812 its reverse (21860121), we get a palindrome (33966933).

The spelling of 12106812 in words is "twelve million, one hundred six thousand, eight hundred twelve".