12103330221 has 48 divisors (see below), whose sum is σ = 18197726976. Its totient is φ = 7745407488.

The previous prime is 12103330207. The next prime is 12103330223. The reversal of 12103330221 is 12203330121.

12103330221 is a `hidden beast` number, since 12 + 103 + 330 + 221 = 666.

12103330221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-12103330221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12103330194 and 12103330203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103330223) 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 47 ways as a sum of consecutive naturals, for example, 9895816 + ... + 9897038.

It is an arithmetic number, because the mean of its divisors is an integer number (379119312).

Almost surely, 2^12103330221 is an apocalyptic number.

It is an amenable number.

12103330221 is a deficient number, since it is larger than the sum of its proper divisors (6094396755).

12103330221 is a wasteful number, since it uses less digits than its factorization.

12103330221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1642 (or 1639 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12103330221 its reverse (12203330121), we get a palindrome (24306660342).

The spelling of 12103330221 in words is "twelve billion, one hundred three million, three hundred thirty thousand, two hundred twenty-one".