12103203020 has 12 divisors (see below), whose sum is σ = 25416726384. Its totient is φ = 4841281200.

The previous prime is 12103203011. The next prime is 12103203031. The reversal of 12103203020 is 2030230121.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12103202986 and 12103203004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302580056 + ... + 302580095.

It is an arithmetic number, because the mean of its divisors is an integer number (2118060532).

Almost surely, 2^12103203020 is an apocalyptic number.

12103203020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103203020 is an abundant number, since it is smaller than the sum of its proper divisors (13313523364).

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

12103203020 is a wasteful number, since it uses less digits than its factorization.

12103203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605160160 (or 605160158 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 12103203020 its reverse (2030230121), we get a palindrome (14133433141).

The spelling of 12103203020 in words is "twelve billion, one hundred three million, two hundred three thousand, twenty".