12103112220 has 48 divisors (see below), whose sum is σ = 33912281760. Its totient is φ = 3225252096.

The previous prime is 12103112201. The next prime is 12103112221. The reversal of 12103112220 is 2221130121.

12103112220 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 (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12103112220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103112221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 17766 + ... + 156594.

It is an arithmetic number, because the mean of its divisors is an integer number (706505870).

Almost surely, 2^12103112220 is an apocalyptic number.

12103112220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103112220 is an abundant number, since it is smaller than the sum of its proper divisors (21809169540).

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

12103112220 is a wasteful number, since it uses less digits than its factorization.

12103112220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140294 (or 140292 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12103112220 its reverse (2221130121), we get a palindrome (14324242341).

The spelling of 12103112220 in words is "twelve billion, one hundred three million, one hundred twelve thousand, two hundred twenty".