210011002020 has 240 divisors, whose sum is σ = 671360659200. Its totient is φ = 54946045440.

The previous prime is 210011002009. The next prime is 210011002049. The reversal of 210011002020 is 20200110012.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 210011001993 and 210011002011.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 18882021 + ... + 18893139.

It is an arithmetic number, because the mean of its divisors is an integer number (2797336080).

Almost surely, 2^210011002020 is an apocalyptic number.

210011002020 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 210011002020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335680329600).

210011002020 is an abundant number, since it is smaller than the sum of its proper divisors (461349657180).

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

210011002020 is a wasteful number, since it uses less digits than its factorization.

210011002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11360 (or 11349 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 210011002020 its reverse (20200110012), we get a palindrome (230211112032).

The spelling of 210011002020 in words is "two hundred ten billion, eleven million, two thousand, twenty".