12003012 has 48 divisors (see below), whose sum is σ = 35566720. Its totient is φ = 3429216.

The previous prime is 12003011. The next prime is 12003073. The reversal of 12003012 is 21030021.

It is a happy number.

12003012 is digitally balanced in base 2 and base 4, because in such bases 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 (9).

It is a junction number, because it is equal to n+sod(n) for n = 12002985 and 12003003.

It is not an unprimeable number, because it can be changed into a prime (12003011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7183 + ... + 8694.

Almost surely, 2^12003012 is an apocalyptic number.

12003012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12003012 is an abundant number, since it is smaller than the sum of its proper divisors (23563708).

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

12003012 is a wasteful number, since it uses less digits than its factorization.

12003012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15897 (or 15889 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 12003012 is about 3464.5363326136. The cubic root of 12003012 is about 228.9620017933.

Adding to 12003012 its reverse (21030021), we get a palindrome (33033033).

The spelling of 12003012 in words is "twelve million, three thousand, twelve".