20020321233 has 32 divisors (see below), whose sum is σ = 32363990400. Its totient is φ = 12130560000.

The previous prime is 20020321219. The next prime is 20020321241. The reversal of 20020321233 is 33212302002.

It is a happy number.

It is not a de Polignac number, because 20020321233 - 2⁶ = 20020321169 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20020321213) 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, 2219733 + ... + 2228733.

It is an arithmetic number, because the mean of its divisors is an integer number (1011374700).

Almost surely, 2^20020321233 is an apocalyptic number.

It is an amenable number.

20020321233 is a deficient number, since it is larger than the sum of its proper divisors (12343669167).

20020321233 is a wasteful number, since it uses less digits than its factorization.

20020321233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16510 (or 16504 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 20020321233 its reverse (33212302002), we get a palindrome (53232623235).

The spelling of 20020321233 in words is "twenty billion, twenty million, three hundred twenty-one thousand, two hundred thirty-three".