210212210 has 32 divisors (see below), whose sum is σ = 408853872. Its totient is φ = 77356800.

The previous prime is 210212201. The next prime is 210212227. The reversal of 210212210 is 12212012.

It is a happy number.

210212210 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 8 ways, for example, as 3916441 + 206295769 = 1979^2 + 14363^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 210212191 and 210212200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38660 + ... + 43760.

Almost surely, 2^210212210 is an apocalyptic number.

210212210 is a deficient number, since it is larger than the sum of its proper divisors (198641662).

210212210 is a wasteful number, since it uses less digits than its factorization.

210212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5438.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 210212210 is about 14498.6968379920. The cubic root of 210212210 is about 594.5923436950.

Adding to 210212210 its reverse (12212012), we get a palindrome (222424222).

The spelling of 210212210 in words is "two hundred ten million, two hundred twelve thousand, two hundred ten".