12421357312 has 324 divisors, whose sum is σ = 32937044616. Its totient is φ = 4633251840.

The previous prime is 12421357307. The next prime is 12421357313. The reversal of 12421357312 is 21375312421.

12421357312 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Its product of digits (10080) is a multiple of the sum of its prime divisors (252).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421357313) 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 35 ways as a sum of consecutive naturals, for example, 58868887 + ... + 58869097.

Almost surely, 2^12421357312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12421357312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16468522308).

12421357312 is an abundant number, since it is smaller than the sum of its proper divisors (20515687304).

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

12421357312 is a wasteful number, since it uses less digits than its factorization.

12421357312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 252 counting only the distinct ones).

The product of its digits is 10080, while the sum is 31.

Adding to 12421357312 its reverse (21375312421), we get a palindrome (33796669733).

The spelling of 12421357312 in words is "twelve billion, four hundred twenty-one million, three hundred fifty-seven thousand, three hundred twelve".