20321233133 has 8 divisors (see below), whose sum is σ = 21023587200. Its totient is φ = 19618987248.

The previous prime is 20321233123. The next prime is 20321233139. The reversal of 20321233133 is 33133212302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20321233133 - 2⁴ = 20321233117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20321233099 and 20321233108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321233139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608960 + ... + 641462.

It is an arithmetic number, because the mean of its divisors is an integer number (2627948400).

Almost surely, 2^20321233133 is an apocalyptic number.

It is an amenable number.

20321233133 is a deficient number, since it is larger than the sum of its proper divisors (702354067).

20321233133 is a wasteful number, since it uses less digits than its factorization.

20321233133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54091.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20321233133 its reverse (33133212302), we get a palindrome (53454445435).

The spelling of 20321233133 in words is "twenty billion, three hundred twenty-one million, two hundred thirty-three thousand, one hundred thirty-three".