12421902550 has 48 divisors (see below), whose sum is σ = 24610612320. Its totient is φ = 4648424960.

The previous prime is 12421902527. The next prime is 12421902551. The reversal of 12421902550 is 5520912421.

12421902550 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12421902551) 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 23 ways as a sum of consecutive naturals, for example, 98196 + ... + 185704.

It is an arithmetic number, because the mean of its divisors is an integer number (512721090).

Almost surely, 2^12421902550 is an apocalyptic number.

12421902550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12421902550 is a deficient number, since it is larger than the sum of its proper divisors (12188709770).

12421902550 is a wasteful number, since it uses less digits than its factorization.

12421902550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87705 (or 87700 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 12421902550 in words is "twelve billion, four hundred twenty-one million, nine hundred two thousand, five hundred fifty".