212210212 has 12 divisors (see below), whose sum is σ = 371491596. Its totient is φ = 106069760.

The previous prime is 212210171. The next prime is 212210237. The reversal of 212210212 is 212012212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56310016 + 155900196 = 7504^2 + 12486^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212210192 and 212210201.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8412 + ... + 22252.

It is an arithmetic number, because the mean of its divisors is an integer number (30957633).

Almost surely, 2^212210212 is an apocalyptic number.

It is an amenable number.

212210212 is a deficient number, since it is larger than the sum of its proper divisors (159281384).

212210212 is a wasteful number, since it uses less digits than its factorization.

212210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17678 (or 17676 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 212210212 is about 14567.4366997080. The cubic root of 212210212 is about 596.4702120872.

Adding to 212210212 its reverse (212012212), we get a palindrome (424222424).

The spelling of 212210212 in words is "two hundred twelve million, two hundred ten thousand, two hundred twelve".