210210210220 has 96 divisors (see below), whose sum is σ = 462211041600. Its totient is φ = 80237122560.

The previous prime is 210210210179. The next prime is 210210210227. The reversal of 210210210220 is 22012012012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 210210210220.

It is not an unprimeable number, because it can be changed into a prime (210210210227) 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, 7803094 + ... + 7829986.

It is an arithmetic number, because the mean of its divisors is an integer number (4814698350).

Almost surely, 2^210210210220 is an apocalyptic number.

210210210220 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 210210210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231105520800).

210210210220 is an abundant number, since it is smaller than the sum of its proper divisors (252000831380).

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

210210210220 is a wasteful number, since it uses less digits than its factorization.

210210210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27155 (or 27153 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 210210210220 its reverse (22012012012), we get a palindrome (232222222232).

The spelling of 210210210220 in words is "two hundred ten billion, two hundred ten million, two hundred ten thousand, two hundred twenty".