12121303303 has 4 divisors (see below), whose sum is σ = 12122083480. Its totient is φ = 12120523128.

The previous prime is 12121303279. The next prime is 12121303339. The reversal of 12121303303 is 30330312121.

12121303303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12121303303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12121303343) 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 3 ways as a sum of consecutive naturals, for example, 366300 + ... + 398017.

It is an arithmetic number, because the mean of its divisors is an integer number (3030520870).

Almost surely, 2^12121303303 is an apocalyptic number.

12121303303 is a deficient number, since it is larger than the sum of its proper divisors (780177).

12121303303 is an equidigital number, since it uses as much as digits as its factorization.

12121303303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780176.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12121303303 its reverse (30330312121), we get a palindrome (42451615424).

The spelling of 12121303303 in words is "twelve billion, one hundred twenty-one million, three hundred three thousand, three hundred three".