12215300 has 72 divisors (see below), whose sum is σ = 28498176. Its totient is φ = 4533760.

The previous prime is 12215297. The next prime is 12215317. The reversal of 12215300 is 351221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108044 + ... + 108156.

It is an arithmetic number, because the mean of its divisors is an integer number (395808).

Almost surely, 2^12215300 is an apocalyptic number.

12215300 is a gapful number since it is divisible by the number (10) 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 12215300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14249088).

12215300 is an abundant number, since it is smaller than the sum of its proper divisors (16282876).

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

12215300 is a wasteful number, since it uses less digits than its factorization.

12215300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 12215300 is about 3495.0393416956. The cubic root of 12215300 is about 230.3039459832.

Adding to 12215300 its reverse (351221), we get a palindrome (12566521).

The spelling of 12215300 in words is "twelve million, two hundred fifteen thousand, three hundred".