213402212 has 12 divisors (see below), whose sum is σ = 382562796. Its totient is φ = 104098560.

The previous prime is 213402187. The next prime is 213402239. The reversal of 213402212 is 212204312.

It can be written as a sum of positive squares in 2 ways, for example, as 113081956 + 100320256 = 10634^2 + 10016^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650453 + ... + 650780.

It is an arithmetic number, because the mean of its divisors is an integer number (31880233).

Almost surely, 2^213402212 is an apocalyptic number.

It is an amenable number.

213402212 is a deficient number, since it is larger than the sum of its proper divisors (169160584).

213402212 is a wasteful number, since it uses less digits than its factorization.

213402212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301278 (or 1301276 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 213402212 is about 14608.2925764786. The cubic root of 213402212 is about 597.5849328679.

Adding to 213402212 its reverse (212204312), we get a palindrome (425606524).

The spelling of 213402212 in words is "two hundred thirteen million, four hundred two thousand, two hundred twelve".