210210220 has 24 divisors (see below), whose sum is σ = 481573008. Its totient is φ = 76440000.

The previous prime is 210210193. The next prime is 210210223. The reversal of 210210220 is 22012012.

210210220 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 (10).

It is a junction number, because it is equal to n+sod(n) for n = 210210197 and 210210206.

It is not an unprimeable number, because it can be changed into a prime (210210223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477531 + ... + 477970.

It is an arithmetic number, because the mean of its divisors is an integer number (20065542).

Almost surely, 2^210210220 is an apocalyptic number.

210210220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210210220 is an abundant number, since it is smaller than the sum of its proper divisors (271362788).

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

210210220 is a wasteful number, since it uses less digits than its factorization.

210210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955521 (or 955519 counting only the distinct ones).

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

The square root of 210210220 is about 14498.6282109722. The cubic root of 210210220 is about 594.5904674284.

Adding to 210210220 its reverse (22012012), we get a palindrome (232222232).

The spelling of 210210220 in words is "two hundred ten million, two hundred ten thousand, two hundred twenty".