12197216 has 24 divisors (see below), whose sum is σ = 24375960. Its totient is φ = 6006528.

The previous prime is 12197191. The next prime is 12197219. The reversal of 12197216 is 61279121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12197219) 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 3 ways as a sum of consecutive naturals, for example, 701 + ... + 4988.

It is an arithmetic number, because the mean of its divisors is an integer number (1015665).

Almost surely, 2^12197216 is an apocalyptic number.

12197216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12197216 is a deficient number, since it is larger than the sum of its proper divisors (12178744).

12197216 is an equidigital number, since it uses as much as digits as its factorization.

12197216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5766 (or 5758 counting only the distinct ones).

The product of its digits is 1512, while the sum is 29.

The square root of 12197216 is about 3492.4512881356. The cubic root of 12197216 is about 230.1902395794.

The spelling of 12197216 in words is "twelve million, one hundred ninety-seven thousand, two hundred sixteen".