303313120121 has 12 divisors (see below), whose sum is σ = 333570503700. Its totient is φ = 275593021440.

The previous prime is 303313120111. The next prime is 303313120193. The reversal of 303313120121 is 121021313303.

It can be written as a sum of positive squares in 2 ways, for example, as 53747930896 + 249565189225 = 231836^2 + 499565^2 .

It is a de Polignac number, because none of the positive numbers 2^k-303313120121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 303313120093 and 303313120102.

It is not an unprimeable number, because it can be changed into a prime (303313120111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 434936 + ... + 892073.

It is an arithmetic number, because the mean of its divisors is an integer number (27797541975).

Almost surely, 2^303313120121 is an apocalyptic number.

It is an amenable number.

303313120121 is a deficient number, since it is larger than the sum of its proper divisors (30257383579).

303313120121 is a wasteful number, since it uses less digits than its factorization.

303313120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1328920 (or 1328909 counting only the distinct ones).

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

Adding to 303313120121 its reverse (121021313303), we get a palindrome (424334433424).

The spelling of 303313120121 in words is "three hundred three billion, three hundred thirteen million, one hundred twenty thousand, one hundred twenty-one".