2021003323020 has 72 divisors (see below), whose sum is σ = 6687683730000. Its totient is φ = 489940199040.

The previous prime is 2021003322979. The next prime is 2021003323039. The reversal of 2021003323020 is 203233001202.

It is a happy number.

2021003323020 is a `hidden beast` number, since 20 + 2 + 10 + 0 + 332 + 302 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2021003322984 and 2021003323002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510352395 + ... + 510356354.

It is an arithmetic number, because the mean of its divisors is an integer number (92884496250).

Almost surely, 2^{2021003323020} is an apocalyptic number.

2021003323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021003323020 is an abundant number, since it is smaller than the sum of its proper divisors (4666680406980).

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

2021003323020 is a wasteful number, since it uses less digits than its factorization.

2021003323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020708775 (or 1020708770 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 2021003323020 its reverse (203233001202), we get a palindrome (2224236324222).

The spelling of 2021003323020 in words is "two trillion, twenty-one billion, three million, three hundred twenty-three thousand, twenty".