20021003030320 has 20 divisors (see below), whose sum is σ = 46548832045680. Its totient is φ = 8008401212096.

The previous prime is 20021003030243. The next prime is 20021003030323. The reversal of 20021003030320 is 2303030012002.

20021003030320 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 20021003030294 and 20021003030303.

It is not an unprimeable number, because it can be changed into a prime (20021003030323) 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 3 ways as a sum of consecutive naturals, for example, 125131268860 + ... + 125131269019.

It is an arithmetic number, because the mean of its divisors is an integer number (2327441602284).

Almost surely, 2^{20021003030320} is an apocalyptic number.

20021003030320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021003030320 is an abundant number, since it is smaller than the sum of its proper divisors (26527829015360).

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

20021003030320 is a wasteful number, since it uses less digits than its factorization.

20021003030320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250262537892 (or 250262537886 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20021003030320 its reverse (2303030012002), we get a palindrome (22324033042322).

The spelling of 20021003030320 in words is "twenty trillion, twenty-one billion, three million, thirty thousand, three hundred twenty".