12003320256 has 56 divisors (see below), whose sum is σ = 31796278800. Its totient is φ = 3996383232.

The previous prime is 12003320239. The next prime is 12003320299. The reversal of 12003320256 is 65202330021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128070 + ... + 201018.

Almost surely, 2^12003320256 is an apocalyptic number.

12003320256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12003320256 is an abundant number, since it is smaller than the sum of its proper divisors (19792958544).

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

12003320256 is an equidigital number, since it uses as much as digits as its factorization.

12003320256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73821 (or 73811 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 12003320256 its reverse (65202330021), we get a palindrome (77205650277).

The spelling of 12003320256 in words is "twelve billion, three million, three hundred twenty thousand, two hundred fifty-six".