210000220 has 24 divisors (see below), whose sum is σ = 441579600. Its totient is φ = 83889792.

The previous prime is 210000199. The next prime is 210000239. The reversal of 210000220 is 22000012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9691 + ... + 22669.

It is an arithmetic number, because the mean of its divisors is an integer number (18399150).

Almost surely, 2^210000220 is an apocalyptic number.

210000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210000220 is an abundant number, since it is smaller than the sum of its proper divisors (231579380).

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

210000220 is a wasteful number, since it uses less digits than its factorization.

210000220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13797 (or 13795 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 210000220 is about 14491.3843369086. The cubic root of 210000220 is about 594.3924028418.

Adding to 210000220 its reverse (22000012), we get a palindrome (232000232).

The spelling of 210000220 in words is "two hundred ten million, two hundred twenty", and thus it is an aban number.