20011002002020 has 96 divisors (see below), whose sum is σ = 43006102675200. Its totient is φ = 7819456243200.

The previous prime is 20011002002011. The next prime is 20011002002023. The reversal of 20011002002020 is 2020020011002.

It is a super-2 number, since 2×20011002002020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 20011002001988 and 20011002002006.

It is not an unprimeable number, because it can be changed into a prime (20011002002023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100366830 + ... + 100566010.

It is an arithmetic number, because the mean of its divisors is an integer number (447980236200).

Almost surely, 2^{20011002002020} is an apocalyptic number.

20011002002020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011002002020 is an abundant number, since it is smaller than the sum of its proper divisors (22995100673180).

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

20011002002020 is a wasteful number, since it uses less digits than its factorization.

20011002002020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199909 (or 199907 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20011002002020 its reverse (2020020011002), we get a palindrome (22031022013022).

The spelling of 20011002002020 in words is "twenty trillion, eleven billion, two million, two thousand, twenty".