12783221024 has 48 divisors (see below), whose sum is σ = 28777105728. Its totient is φ = 5475693312.

The previous prime is 12783221021. The next prime is 12783221027. The reversal of 12783221024 is 42012238721.

12783221024 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12783221021) and next prime (12783221027).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (12783221021) 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 7 ways as a sum of consecutive naturals, for example, 452894 + ... + 480290.

It is an arithmetic number, because the mean of its divisors is an integer number (599523036).

Almost surely, 2^12783221024 is an apocalyptic number.

12783221024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12783221024 is an abundant number, since it is smaller than the sum of its proper divisors (15993884704).

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

12783221024 is a wasteful number, since it uses less digits than its factorization.

12783221024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29497 (or 29489 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

Adding to 12783221024 its reverse (42012238721), we get a palindrome (54795459745).

The spelling of 12783221024 in words is "twelve billion, seven hundred eighty-three million, two hundred twenty-one thousand, twenty-four".