12103443020 has 24 divisors (see below), whose sum is σ = 25548933984. Its totient is φ = 4816290816.

The previous prime is 12103442993. The next prime is 12103443049. The reversal of 12103443020 is 2034430121.

12103443020 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 (20).

It is a junction number, because it is equal to n+sod(n) for n = 12103442983 and 12103443001.

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 7 ways as a sum of consecutive naturals, for example, 1563944 + ... + 1571663.

It is an arithmetic number, because the mean of its divisors is an integer number (1064538916).

Almost surely, 2^12103443020 is an apocalyptic number.

12103443020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103443020 is an abundant number, since it is smaller than the sum of its proper divisors (13445490964).

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

12103443020 is a wasteful number, since it uses less digits than its factorization.

12103443020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3135809 (or 3135807 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12103443020 its reverse (2034430121), we get a palindrome (14137873141).

The spelling of 12103443020 in words is "twelve billion, one hundred three million, four hundred forty-three thousand, twenty".