20021012002020 has 24 divisors (see below), whose sum is σ = 56058833605824. Its totient is φ = 5338936533856.

The previous prime is 20021012001973. The next prime is 20021012002021. The reversal of 20021012002020 is 2020021012002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20021012001987 and 20021012002005.

It is not an unprimeable number, because it can be changed into a prime (20021012002021) 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, 166841766624 + ... + 166841766743.

It is an arithmetic number, because the mean of its divisors is an integer number (2335784733576).

Almost surely, 2^{20021012002020} is an apocalyptic number.

20021012002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021012002020 is an abundant number, since it is smaller than the sum of its proper divisors (36037821603804).

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

20021012002020 is a wasteful number, since it uses less digits than its factorization.

20021012002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333683533379 (or 333683533377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20021012002020 its reverse (2020021012002), we get a palindrome (22041033014022).

The spelling of 20021012002020 in words is "twenty trillion, twenty-one billion, twelve million, two thousand, twenty".