20302303121 has 4 divisors (see below), whose sum is σ = 20374042992. Its totient is φ = 20230563252.

The previous prime is 20302303081. The next prime is 20302303123. The reversal of 20302303121 is 12130320302.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12130320302 = 2 ⋅6065160151.

It is a cyclic number.

It is not a de Polignac number, because 20302303121 - 2²⁶ = 20235194257 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 20302303121.

It is not an unprimeable number, because it can be changed into a prime (20302303123) 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, 35869511 + ... + 35870076.

It is an arithmetic number, because the mean of its divisors is an integer number (5093510748).

Almost surely, 2^20302303121 is an apocalyptic number.

It is an amenable number.

20302303121 is a deficient number, since it is larger than the sum of its proper divisors (71739871).

20302303121 is an equidigital number, since it uses as much as digits as its factorization.

20302303121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71739870.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20302303121 its reverse (12130320302), we get a palindrome (32432623423).

The spelling of 20302303121 in words is "twenty billion, three hundred two million, three hundred three thousand, one hundred twenty-one".