210002011020 has 240 divisors, whose sum is σ = 680806511616. Its totient is φ = 54132624000.

The previous prime is 210002011003. The next prime is 210002011027. The reversal of 210002011020 is 20110200012.

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 = 210002010993 and 210002011011.

It is not an unprimeable number, because it can be changed into a prime (210002011027) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 58805835 + ... + 58809405.

Almost surely, 2^210002011020 is an apocalyptic number.

210002011020 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 210002011020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340403255808).

210002011020 is an abundant number, since it is smaller than the sum of its proper divisors (470804500596).

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

210002011020 is a wasteful number, since it uses less digits than its factorization.

210002011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4783 counting only the distinct ones).

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

Adding to 210002011020 its reverse (20110200012), we get a palindrome (230112211032).

The spelling of 210002011020 in words is "two hundred ten billion, two million, eleven thousand, twenty".