210221210210 has 64 divisors (see below), whose sum is σ = 424132377984. Its totient is φ = 74346854400.

The previous prime is 210221210057. The next prime is 210221210239. The reversal of 210221210210 is 12012122012.

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, 11105714 + ... + 11124626.

It is an arithmetic number, because the mean of its divisors is an integer number (6627068406).

Almost surely, 2^210221210210 is an apocalyptic number.

210221210210 is an abundant number, since it is smaller than the sum of its proper divisors (213911167774).

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

210221210210 is a wasteful number, since it uses less digits than its factorization.

210221210210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21699.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 210221210210 its reverse (12012122012), we get a palindrome (222233332222).

The spelling of 210221210210 in words is "two hundred ten billion, two hundred twenty-one million, two hundred ten thousand, two hundred ten".