12103203012 has 24 divisors (see below), whose sum is σ = 29214628800. Its totient is φ = 3895283616.

The previous prime is 12103203011. The next prime is 12103203031. The reversal of 12103203012 is 21030230121.

It is a junction number, because it is equal to n+sod(n) for n = 12103202982 and 12103203000.

It is not an unprimeable number, because it can be changed into a prime (12103203011) 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, 17389312 + ... + 17390007.

It is an arithmetic number, because the mean of its divisors is an integer number (1217276200).

Almost surely, 2^12103203012 is an apocalyptic number.

12103203012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12103203012 is an abundant number, since it is smaller than the sum of its proper divisors (17111425788).

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

12103203012 is a wasteful number, since it uses less digits than its factorization.

12103203012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34779355 (or 34779353 counting only the distinct ones).

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

Adding to 12103203012 its reverse (21030230121), we get a palindrome (33133433133).

The spelling of 12103203012 in words is "twelve billion, one hundred three million, two hundred three thousand, twelve".