20303113121 has 16 divisors (see below), whose sum is σ = 21565958400. Its totient is φ = 19080028800.

The previous prime is 20303113111. The next prime is 20303113151. The reversal of 20303113121 is 12131130302.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20303113121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20303113121.

It is not an unprimeable number, because it can be changed into a prime (20303113111) 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, 492650 + ... + 532268.

It is an arithmetic number, because the mean of its divisors is an integer number (1347872400).

Almost surely, 2^20303113121 is an apocalyptic number.

It is an amenable number.

20303113121 is a deficient number, since it is larger than the sum of its proper divisors (1262845279).

20303113121 is a wasteful number, since it uses less digits than its factorization.

20303113121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40120.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20303113121 its reverse (12131130302), we get a palindrome (32434243423).

The spelling of 20303113121 in words is "twenty billion, three hundred three million, one hundred thirteen thousand, one hundred twenty-one".