12421323355 has 96 divisors (see below), whose sum is σ = 18572241600. Its totient is φ = 7937491968.

The previous prime is 12421323349. The next prime is 12421323367. The reversal of 12421323355 is 55332312421.

It is not a de Polignac number, because 12421323355 - 2²¹ = 12419226203 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 33300949 + ... + 33301321.

It is an arithmetic number, because the mean of its divisors is an integer number (193460850).

Almost surely, 2^12421323355 is an apocalyptic number.

12421323355 is a deficient number, since it is larger than the sum of its proper divisors (6150918245).

12421323355 is a wasteful number, since it uses less digits than its factorization.

12421323355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 566 counting only the distinct ones).

The product of its digits is 21600, while the sum is 31.

Adding to 12421323355 its reverse (55332312421), we get a palindrome (67753635776).

The spelling of 12421323355 in words is "twelve billion, four hundred twenty-one million, three hundred twenty-three thousand, three hundred fifty-five".