12003003012 has 144 divisors (see below), whose sum is σ = 37889108096. Its totient is φ = 2877811200.

The previous prime is 12003002969. The next prime is 12003003029. The reversal of 12003003012 is 21030030021.

It is a happy number.

12003003012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

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 47 ways as a sum of consecutive naturals, for example, 86712 + ... + 177552.

Almost surely, 2^12003003012 is an apocalyptic number.

12003003012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12003003012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18944554048).

12003003012 is an abundant number, since it is smaller than the sum of its proper divisors (25886105084).

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

12003003012 is a wasteful number, since it uses less digits than its factorization.

12003003012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90890 (or 90877 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 12003003012 its reverse (21030030021), we get a palindrome (33033033033).

The spelling of 12003003012 in words is "twelve billion, three million, three thousand, twelve".