20021134443 has 8 divisors (see below), whose sum is σ = 26806540800. Its totient is φ = 13291575528.

The previous prime is 20021134387. The next prime is 20021134451. The reversal of 20021134443 is 34443112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20021134443 - 2²⁰ = 20020085867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021130443) 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, 13961023 + ... + 13962456.

It is an arithmetic number, because the mean of its divisors is an integer number (3350817600).

Almost surely, 2^20021134443 is an apocalyptic number.

20021134443 is a deficient number, since it is larger than the sum of its proper divisors (6785406357).

20021134443 is a wasteful number, since it uses less digits than its factorization.

20021134443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27923721.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20021134443 its reverse (34443112002), we get a palindrome (54464246445).

The spelling of 20021134443 in words is "twenty billion, twenty-one million, one hundred thirty-four thousand, four hundred forty-three".