20303333113021 has 4 divisors (see below), whose sum is σ = 23203809272032. Its totient is φ = 17402856954012.

The previous prime is 20303333113001. The next prime is 20303333113033. The reversal of 20303333113021 is 12031133330302.

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 20303333113021 - 2⁷ = 20303333112893 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 (20303333113001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1450238079495 + ... + 1450238079508.

It is an arithmetic number, because the mean of its divisors is an integer number (5800952318008).

Almost surely, 2^{20303333113021} is an apocalyptic number.

It is an amenable number.

20303333113021 is a deficient number, since it is larger than the sum of its proper divisors (2900476159011).

20303333113021 is an equidigital number, since it uses as much as digits as its factorization.

20303333113021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2900476159010.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 20303333113021 its reverse (12031133330302), we get a palindrome (32334466443323).

The spelling of 20303333113021 in words is "twenty trillion, three hundred three billion, three hundred thirty-three million, one hundred thirteen thousand, twenty-one".