213202212 has 12 divisors (see below), whose sum is σ = 497471856. Its totient is φ = 71067400.

The previous prime is 213202181. The next prime is 213202247. The reversal of 213202212 is 212202312.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 213202191 and 213202200.

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, 8883414 + ... + 8883437.

It is an arithmetic number, because the mean of its divisors is an integer number (41455988).

Almost surely, 2^213202212 is an apocalyptic number.

It is an amenable number.

213202212 is an abundant number, since it is smaller than the sum of its proper divisors (284269644).

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

213202212 is a wasteful number, since it uses less digits than its factorization.

213202212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17766858 (or 17766856 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 213202212 is about 14601.4455448767. The cubic root of 213202212 is about 597.3981895005.

Adding to 213202212 its reverse (212202312), we get a palindrome (425404524).

It can be divided in two parts, 21320 and 2212, that added together give a palindrome (23532).

The spelling of 213202212 in words is "two hundred thirteen million, two hundred two thousand, two hundred twelve".