20001133001 has 4 divisors (see below), whose sum is σ = 20178134292. Its totient is φ = 19824131712.

The previous prime is 20001132953. The next prime is 20001133007. The reversal of 20001133001 is 10033110002.

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 11225190601 + 8775942400 = 105949^2 + 93680^2 .

It is a cyclic number.

It is not a de Polignac number, because 20001133001 - 2¹⁰ = 20001131977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001133007) 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, 88500476 + ... + 88500701.

It is an arithmetic number, because the mean of its divisors is an integer number (5044533573).

Almost surely, 2^20001133001 is an apocalyptic number.

It is an amenable number.

20001133001 is a deficient number, since it is larger than the sum of its proper divisors (177001291).

20001133001 is a wasteful number, since it uses less digits than its factorization.

20001133001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177001290.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 20001133001 its reverse (10033110002), we get a palindrome (30034243003).

The spelling of 20001133001 in words is "twenty billion, one million, one hundred thirty-three thousand, one".