20021330443020 has 192 divisors, whose sum is σ = 57889767398400. Its totient is φ = 5167721825280.

The previous prime is 20021330443003. The next prime is 20021330443031. The reversal of 20021330443020 is 2034403312002.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 190211766 + ... + 190316994.

It is an arithmetic number, because the mean of its divisors is an integer number (301509205200).

Almost surely, 2^{20021330443020} is an apocalyptic number.

20021330443020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20021330443020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28944883699200).

20021330443020 is an abundant number, since it is smaller than the sum of its proper divisors (37868436955380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20021330443020 is a wasteful number, since it uses less digits than its factorization.

20021330443020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106128 (or 106126 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 20021330443020 its reverse (2034403312002), we get a palindrome (22055733755022).

The spelling of 20021330443020 in words is "twenty trillion, twenty-one billion, three hundred thirty million, four hundred forty-three thousand, twenty".