20331021033 has 32 divisors (see below), whose sum is σ = 30312247680. Its totient is φ = 13467767040.

The previous prime is 20331020917. The next prime is 20331021077. The reversal of 20331021033 is 33012013302.

It is not a de Polignac number, because 20331021033 - 2⁸ = 20331020777 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20331020997 and 20331021015.

It is not an unprimeable number, because it can be changed into a prime (20331021533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3274510 + ... + 3280712.

It is an arithmetic number, because the mean of its divisors is an integer number (947257740).

Almost surely, 2^20331021033 is an apocalyptic number.

It is an amenable number.

20331021033 is a deficient number, since it is larger than the sum of its proper divisors (9981226647).

20331021033 is a wasteful number, since it uses less digits than its factorization.

20331021033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6966 (or 6960 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 20331021033 its reverse (33012013302), we get a palindrome (53343034335).

The spelling of 20331021033 in words is "twenty billion, three hundred thirty-one million, twenty-one thousand, thirty-three".