12051503220 has 24 divisors (see below), whose sum is σ = 33744209184. Its totient is φ = 3213734176.

The previous prime is 12051503213. The next prime is 12051503221. The reversal of 12051503220 is 2230515021.

12051503220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12051503221) 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 7 ways as a sum of consecutive naturals, for example, 100429134 + ... + 100429253.

It is an arithmetic number, because the mean of its divisors is an integer number (1406008716).

Almost surely, 2^12051503220 is an apocalyptic number.

12051503220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12051503220 is an abundant number, since it is smaller than the sum of its proper divisors (21692705964).

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

12051503220 is a wasteful number, since it uses less digits than its factorization.

12051503220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200858399 (or 200858397 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 12051503220 in words is "twelve billion, fifty-one million, five hundred three thousand, two hundred twenty".