12103210221 has 16 divisors (see below), whose sum is σ = 16453086336. Its totient is φ = 7911274176.

The previous prime is 12103210201. The next prime is 12103210241. The reversal of 12103210221 is 12201230121.

12103210221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12103210201) and next prime (12103210241).

It is not a de Polignac number, because 12103210221 - 2⁶ = 12103210157 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12103210221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103210201) 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, 220671 + ... + 270003.

It is an arithmetic number, because the mean of its divisors is an integer number (1028317896).

Almost surely, 2^12103210221 is an apocalyptic number.

It is an amenable number.

12103210221 is a deficient number, since it is larger than the sum of its proper divisors (4349876115).

12103210221 is a wasteful number, since it uses less digits than its factorization.

12103210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50932.

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

Adding to 12103210221 its reverse (12201230121), we get a palindrome (24304440342).

The spelling of 12103210221 in words is "twelve billion, one hundred three million, two hundred ten thousand, two hundred twenty-one".