12721416412 has 12 divisors (see below), whose sum is σ = 22263272920. Its totient is φ = 6360481296.

The previous prime is 12721416397. The next prime is 12721416451. The reversal of 12721416412 is 21461412721.

It is a happy number.

12721416412 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 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 in 3 ways as a sum of consecutive naturals, for example, 170914 + ... + 233782.

Almost surely, 2^12721416412 is an apocalyptic number.

It is an amenable number.

12721416412 is a deficient number, since it is larger than the sum of its proper divisors (9541856508).

12721416412 is a wasteful number, since it uses less digits than its factorization.

12721416412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113460 (or 113458 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The spelling of 12721416412 in words is "twelve billion, seven hundred twenty-one million, four hundred sixteen thousand, four hundred twelve".