20010133133 has 4 divisors (see below), whose sum is σ = 20550947580. Its totient is φ = 19469318688.

The previous prime is 20010133123. The next prime is 20010133151. The reversal of 20010133133 is 33133101002.

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 18364857289 + 1645275844 = 135517^2 + 40562^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010133133 - 2²² = 20005938829 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 (20010133123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 270407168 + ... + 270407241.

It is an arithmetic number, because the mean of its divisors is an integer number (5137736895).

Almost surely, 2^20010133133 is an apocalyptic number.

It is an amenable number.

20010133133 is a deficient number, since it is larger than the sum of its proper divisors (540814447).

20010133133 is an equidigital number, since it uses as much as digits as its factorization.

20010133133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540814446.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20010133133 its reverse (33133101002), we get a palindrome (53143234135).

The spelling of 20010133133 in words is "twenty billion, ten million, one hundred thirty-three thousand, one hundred thirty-three".