20001330233 has 4 divisors (see below), whose sum is σ = 20003017188. Its totient is φ = 19999643280.

The previous prime is 20001330221. The next prime is 20001330313. The reversal of 20001330233 is 33203310002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10897689664 + 9103640569 = 104392^2 + 95413^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001330233 - 2²⁸ = 19732894777 is a prime.

It is a super-2 number, since 2×20001330233² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001380233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825566 + ... + 849447.

It is an arithmetic number, because the mean of its divisors is an integer number (5000754297).

Almost surely, 2^20001330233 is an apocalyptic number.

It is an amenable number.

20001330233 is a deficient number, since it is larger than the sum of its proper divisors (1686955).

20001330233 is a wasteful number, since it uses less digits than its factorization.

20001330233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686954.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20001330233 its reverse (33203310002), we get a palindrome (53204640235).

The spelling of 20001330233 in words is "twenty billion, one million, three hundred thirty thousand, two hundred thirty-three".