12003612 has 24 divisors (see below), whose sum is σ = 28605696. Its totient is φ = 3915888.

The previous prime is 12003601. The next prime is 12003613. The reversal of 12003612 is 21630021.

12003612 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 junction number, because it is equal to n+sod(n) for n = 12003591 and 12003600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10078 + ... + 11205.

It is an arithmetic number, because the mean of its divisors is an integer number (1191904).

Almost surely, 2^12003612 is an apocalyptic number.

12003612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12003612 is an abundant number, since it is smaller than the sum of its proper divisors (16602084).

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

12003612 is a wasteful number, since it uses less digits than its factorization.

12003612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21337 (or 21335 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12003612 is about 3464.6229232054. The cubic root of 12003612 is about 228.9658168055.

Adding to 12003612 its reverse (21630021), we get a palindrome (33633633).

The spelling of 12003612 in words is "twelve million, three thousand, six hundred twelve".