20021130133 has 16 divisors (see below), whose sum is σ = 20373500160. Its totient is φ = 19671537600.

The previous prime is 20021130047. The next prime is 20021130211. The reversal of 20021130133 is 33103112002.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20021130133 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 (20021131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24385863 + ... + 24386683.

It is an arithmetic number, because the mean of its divisors is an integer number (1273343760).

Almost surely, 2^20021130133 is an apocalyptic number.

It is an amenable number.

20021130133 is a deficient number, since it is larger than the sum of its proper divisors (352370027).

20021130133 is an equidigital number, since it uses as much as digits as its factorization.

20021130133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20021130133 its reverse (33103112002), we get a palindrome (53124242135).

The spelling of 20021130133 in words is "twenty billion, twenty-one million, one hundred thirty thousand, one hundred thirty-three".