12421838668 has 6 divisors (see below), whose sum is σ = 21738217676. Its totient is φ = 6210919332.

The previous prime is 12421838651. The next prime is 12421838699. The reversal of 12421838668 is 86683812421.

12421838668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1552729830 + ... + 1552729837.

Almost surely, 2^12421838668 is an apocalyptic number.

It is an amenable number.

12421838668 is a deficient number, since it is larger than the sum of its proper divisors (9316379008).

12421838668 is a wasteful number, since it uses less digits than its factorization.

12421838668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3105459671 (or 3105459669 counting only the distinct ones).

The product of its digits is 884736, while the sum is 49.

The spelling of 12421838668 in words is "twelve billion, four hundred twenty-one million, eight hundred thirty-eight thousand, six hundred sixty-eight".