210221011102020 has 192 divisors, whose sum is σ = 602516734848000. Its totient is φ = 54747901877760.

The previous prime is 210221011102019. The next prime is 210221011102049. The reversal of 210221011102020 is 20201110122012.

210221011102020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3385224931 + ... + 3385287029.

It is an arithmetic number, because the mean of its divisors is an integer number (3138107994000).

Almost surely, 2^{210221011102020} is an apocalyptic number.

210221011102020 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 210221011102020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (301258367424000).

210221011102020 is an abundant number, since it is smaller than the sum of its proper divisors (392295723745980).

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

210221011102020 is a wasteful number, since it uses less digits than its factorization.

210221011102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68418 (or 68416 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210221011102020 its reverse (20201110122012), we get a palindrome (230422121224032).

The spelling of 210221011102020 in words is "two hundred ten trillion, two hundred twenty-one billion, eleven million, one hundred two thousand, twenty".