210212220210 has 64 divisors (see below), whose sum is σ = 517455724032. Its totient is φ = 54628345856.

The previous prime is 210212220199. The next prime is 210212220263. The reversal of 210212220210 is 12022212012.

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

It is a self number, because there is not a number n which added to its sum of digits gives 210212220210.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8602 + ... + 648458.

It is an arithmetic number, because the mean of its divisors is an integer number (8085245688).

Almost surely, 2^210212220210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210212220210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258727862016).

210212220210 is an abundant number, since it is smaller than the sum of its proper divisors (307243503822).

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

210212220210 is a wasteful number, since it uses less digits than its factorization.

210212220210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640147.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 210212220210 its reverse (12022212012), we get a palindrome (222234432222).

The spelling of 210212220210 in words is "two hundred ten billion, two hundred twelve million, two hundred twenty thousand, two hundred ten".