12397212 has 60 divisors (see below), whose sum is σ = 32870376. Its totient is φ = 4073760.

The previous prime is 12397171. The next prime is 12397243. The reversal of 12397212 is 21279321.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 26662 + ... + 27122.

Almost surely, 2^12397212 is an apocalyptic number.

12397212 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 12397212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16435188).

12397212 is an abundant number, since it is smaller than the sum of its proper divisors (20473164).

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

12397212 is a wasteful number, since it uses less digits than its factorization.

12397212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560 (or 549 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 12397212 is about 3520.9674806791. The cubic root of 12397212 is about 231.4415571785.

The spelling of 12397212 in words is "twelve million, three hundred ninety-seven thousand, two hundred twelve".