12812212 has 48 divisors (see below), whose sum is σ = 26812800. Its totient is φ = 5242752.

The previous prime is 12812197. The next prime is 12812227. The reversal of 12812212 is 21221821.

It is an interprime number because it is at equal distance from previous prime (12812197) and next prime (12812227).

It is a super-3 number, since 3×12812212³ (a number of 22 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12812212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85914 + ... + 86062.

It is an arithmetic number, because the mean of its divisors is an integer number (558600).

Almost surely, 2^12812212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12812212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13406400).

12812212 is an abundant number, since it is smaller than the sum of its proper divisors (14000588).

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

12812212 is a wasteful number, since it uses less digits than its factorization.

12812212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 278 counting only the distinct ones).

The product of its digits is 128, while the sum is 19.

The square root of 12812212 is about 3579.4150360080. The cubic root of 12812212 is about 233.9957872960.

The spelling of 12812212 in words is "twelve million, eight hundred twelve thousand, two hundred twelve".