12404421012 has 12 divisors (see below), whose sum is σ = 28943649056. Its totient is φ = 4134807000.

The previous prime is 12404421011. The next prime is 12404421023. The reversal of 12404421012 is 21012440421.

12404421012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 12404421012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404421011) 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 3 ways as a sum of consecutive naturals, for example, 516850864 + ... + 516850887.

Almost surely, 2^12404421012 is an apocalyptic number.

12404421012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12404421012 is an abundant number, since it is smaller than the sum of its proper divisors (16539228044).

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

12404421012 is a wasteful number, since it uses less digits than its factorization.

12404421012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033701758 (or 1033701756 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 12404421012 its reverse (21012440421), we get a palindrome (33416861433).

The spelling of 12404421012 in words is "twelve billion, four hundred four million, four hundred twenty-one thousand, twelve".