12103313321 has 4 divisors (see below), whose sum is σ = 13203614544. Its totient is φ = 11003012100.

The previous prime is 12103313317. The next prime is 12103313333. The reversal of 12103313321 is 12331330121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12103313321 - 2² = 12103313317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12103313293 and 12103313302.

It is not an unprimeable number, because it can be changed into a prime (12103313371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550150595 + ... + 550150616.

It is an arithmetic number, because the mean of its divisors is an integer number (3300903636).

Almost surely, 2^12103313321 is an apocalyptic number.

12103313321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12103313321 is a deficient number, since it is larger than the sum of its proper divisors (1100301223).

12103313321 is a wasteful number, since it uses less digits than its factorization.

12103313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100301222.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 12103313321 its reverse (12331330121), we get a palindrome (24434643442).

The spelling of 12103313321 in words is "twelve billion, one hundred three million, three hundred thirteen thousand, three hundred twenty-one".