220221210 has 192 divisors, whose sum is σ = 637378560. Its totient is φ = 48470400.

The previous prime is 220221193. The next prime is 220221223. The reversal of 220221210 is 12122022.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2138019 + ... + 2138121.

It is an arithmetic number, because the mean of its divisors is an integer number (3319680).

Almost surely, 2^220221210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220221210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318689280).

220221210 is an abundant number, since it is smaller than the sum of its proper divisors (417157350).

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

220221210 is a wasteful number, since it uses less digits than its factorization.

220221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 220221210 is about 14839.8520882117. The cubic root of 220221210 is about 603.8833396753.

Adding to 220221210 its reverse (12122022), we get a palindrome (232343232).

It can be divided in two parts, 22022 and 1210, that added together give a palindrome (23232).

The spelling of 220221210 in words is "two hundred twenty million, two hundred twenty-one thousand, two hundred ten".