12215224250 has 16 divisors (see below), whose sum is σ = 22866900264. Its totient is φ = 4886089600.

The previous prime is 12215224243. The next prime is 12215224253. The reversal of 12215224250 is 5242251221.

12215224250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5227434601 + 6987789649 = 72301^2 + 83593^2 .

It is not an unprimeable number, because it can be changed into a prime (12215224253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24430199 + ... + 24430698.

Almost surely, 2^12215224250 is an apocalyptic number.

12215224250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12215224250 is a deficient number, since it is larger than the sum of its proper divisors (10651676014).

12215224250 is an equidigital number, since it uses as much as digits as its factorization.

12215224250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48860914 (or 48860904 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 26.

Adding to 12215224250 its reverse (5242251221), we get a palindrome (17457475471).

The spelling of 12215224250 in words is "twelve billion, two hundred fifteen million, two hundred twenty-four thousand, two hundred fifty".