20001033331233 has 4 divisors (see below), whose sum is σ = 26668044441648. Its totient is φ = 13334022220820.

The previous prime is 20001033331187. The next prime is 20001033331267. The reversal of 20001033331233 is 33213333010002.

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 20001033331233 - 2²⁸ = 20000764895777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20001033330233) 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 3 ways as a sum of consecutive naturals, for example, 3333505555203 + ... + 3333505555208.

It is an arithmetic number, because the mean of its divisors is an integer number (6667011110412).

Almost surely, 2^{20001033331233} is an apocalyptic number.

It is an amenable number.

20001033331233 is a deficient number, since it is larger than the sum of its proper divisors (6667011110415).

20001033331233 is an equidigital number, since it uses as much as digits as its factorization.

20001033331233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667011110414.

The product of its (nonzero) digits is 2916, while the sum is 24.

Adding to 20001033331233 its reverse (33213333010002), we get a palindrome (53214366341235).

The spelling of 20001033331233 in words is "twenty trillion, one billion, thirty-three million, three hundred thirty-one thousand, two hundred thirty-three".