12284478621 has 12 divisors (see below), whose sum is σ = 17749636320. Its totient is φ = 8187165000.

The previous prime is 12284478611. The next prime is 12284478629. The reversal of 12284478621 is 12687448221.

12284478621 is a `hidden beast` number, since 12 + 2 + 8 + 4 + 4 + 7 + 8 + 621 = 666.

12284478621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12284478621 - 2¹⁵ = 12284445853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12284478629) 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 11 ways as a sum of consecutive naturals, for example, 175755 + ... + 235496.

It is an arithmetic number, because the mean of its divisors is an integer number (1479136360).

Almost surely, 2^12284478621 is an apocalyptic number.

It is an amenable number.

12284478621 is a deficient number, since it is larger than the sum of its proper divisors (5465157699).

12284478621 is a wasteful number, since it uses less digits than its factorization.

12284478621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414576 (or 414573 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The spelling of 12284478621 in words is "twelve billion, two hundred eighty-four million, four hundred seventy-eight thousand, six hundred twenty-one".