12216852 has 96 divisors (see below), whose sum is σ = 33868800. Its totient is φ = 3801600.

The previous prime is 12216839. The next prime is 12216857. The reversal of 12216852 is 25861221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12216857) 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 31 ways as a sum of consecutive naturals, for example, 137224 + ... + 137312.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^12216852 is an apocalyptic number.

12216852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12216852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16934400).

12216852 is an abundant number, since it is smaller than the sum of its proper divisors (21651948).

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

12216852 is a wasteful number, since it uses less digits than its factorization.

12216852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174 (or 166 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 12216852 is about 3495.2613636179. The cubic root of 12216852 is about 230.3136992322.

The spelling of 12216852 in words is "twelve million, two hundred sixteen thousand, eight hundred fifty-two".