210221211010210 has 16 divisors (see below), whose sum is σ = 378398503718136. Its totient is φ = 84088412426368.

The previous prime is 210221211010163. The next prime is 210221211010247. The reversal of 210221211010210 is 12010112122012.

210221211010210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 203816196569241 + 6405014440969 = 14276421^2 + 2530813^2 .

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, 4189872 + ... + 20928388.

Almost surely, 2^{210221211010210} is an apocalyptic number.

210221211010210 is a deficient number, since it is larger than the sum of its proper divisors (168177292707926).

210221211010210 is a wasteful number, since it uses less digits than its factorization.

210221211010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17994437.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 210221211010210 its reverse (12010112122012), we get a palindrome (222231323132222).

The spelling of 210221211010210 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred eleven million, ten thousand, two hundred ten".