12195612 has 144 divisors (see below), whose sum is σ = 38158848. Its totient is φ = 3231360.

The previous prime is 12195593. The next prime is 12195619. The reversal of 12195612 is 21659121.

12195612 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12195619) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 118353 + ... + 118455.

It is an arithmetic number, because the mean of its divisors is an integer number (264992).

Almost surely, 2^12195612 is an apocalyptic number.

12195612 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 12195612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19079424).

12195612 is an abundant number, since it is smaller than the sum of its proper divisors (25963236).

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

12195612 is a wasteful number, since it uses less digits than its factorization.

12195612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 155 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 12195612 is about 3492.2216424505. The cubic root of 12195612 is about 230.1801487158.

The spelling of 12195612 in words is "twelve million, one hundred ninety-five thousand, six hundred twelve".