12001103220 has 48 divisors (see below), whose sum is σ = 33691815360. Its totient is φ = 3191844096.

The previous prime is 12001103113. The next prime is 12001103237. The reversal of 12001103220 is 2230110021.

12001103220 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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 12001103196 and 12001103205.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 241137 + ... + 286616.

It is an arithmetic number, because the mean of its divisors is an integer number (701912820).

Almost surely, 2^12001103220 is an apocalyptic number.

12001103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12001103220 is an abundant number, since it is smaller than the sum of its proper divisors (21690712140).

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

12001103220 is a wasteful number, since it uses less digits than its factorization.

12001103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528144 (or 528142 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12001103220 its reverse (2230110021), we get a palindrome (14231213241).

The spelling of 12001103220 in words is "twelve billion, one million, one hundred three thousand, two hundred twenty".