20001001133 has 8 divisors (see below), whose sum is σ = 20182356480. Its totient is φ = 19820158560.

The previous prime is 20001001081. The next prime is 20001001157. The reversal of 20001001133 is 33110010002.

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 20001001133 - 2¹⁰ = 20001000109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001001183) 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, 49613 + ... + 206066.

It is an arithmetic number, because the mean of its divisors is an integer number (2522794560).

Almost surely, 2^20001001133 is an apocalyptic number.

It is an amenable number.

20001001133 is a deficient number, since it is larger than the sum of its proper divisors (181355347).

20001001133 is a wasteful number, since it uses less digits than its factorization.

20001001133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256387.

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

Adding to 20001001133 its reverse (33110010002), we get a palindrome (53111011135).

The spelling of 20001001133 in words is "twenty billion, one million, one thousand, one hundred thirty-three".