12103012303321 has 4 divisors (see below), whose sum is σ = 12103404106212. Its totient is φ = 12102620500432.

The previous prime is 12103012303231. The next prime is 12103012303387. The reversal of 12103012303321 is 12330321030121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3259739975625 + 8843272327696 = 1805475^2 + 2973764^2 .

It is a cyclic number.

It is not a de Polignac number, because 12103012303321 - 2¹¹ = 12103012301273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12103012303292 and 12103012303301.

It is not an unprimeable number, because it can be changed into a prime (12103012300321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195855106 + ... + 195916891.

It is an arithmetic number, because the mean of its divisors is an integer number (3025851026553).

Almost surely, 2^{12103012303321} is an apocalyptic number.

It is an amenable number.

12103012303321 is a deficient number, since it is larger than the sum of its proper divisors (391802891).

12103012303321 is an equidigital number, since it uses as much as digits as its factorization.

12103012303321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391802890.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 12103012303321 its reverse (12330321030121), we get a palindrome (24433333333442).

The spelling of 12103012303321 in words is "twelve trillion, one hundred three billion, twelve million, three hundred three thousand, three hundred twenty-one".