210210212 has 12 divisors (see below), whose sum is σ = 380553180. Its totient is φ = 101480736.

The previous prime is 210210193. The next prime is 210210223. The reversal of 210210212 is 212012012.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 178917376 + 31292836 = 13376^2 + 5594^2 .

It is a junction number, because it is equal to n+sod(n) for n = 210210193 and 210210202.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 905963 + ... + 906194.

It is an arithmetic number, because the mean of its divisors is an integer number (31712765).

Almost surely, 2^210210212 is an apocalyptic number.

It is an amenable number.

210210212 is a deficient number, since it is larger than the sum of its proper divisors (170342968).

210210212 is a wasteful number, since it uses less digits than its factorization.

210210212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1812190 (or 1812188 counting only the distinct ones).

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

The square root of 210210212 is about 14498.6279350841. The cubic root of 210210212 is about 594.5904598856.

Adding to 210210212 its reverse (212012012), we get a palindrome (422222224).

The spelling of 210210212 in words is "two hundred ten million, two hundred ten thousand, two hundred twelve".