212201213 has 6 divisors (see below), whose sum is σ = 246846366. Its totient is φ = 181886712.

The previous prime is 212201201. The next prime is 212201219. The reversal of 212201213 is 312102212.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 106461124 + 105740089 = 10318^2 + 10283^2 .

It is not a de Polignac number, because 212201213 - 2¹⁸ = 211939069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212201219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2165270 + ... + 2165367.

It is an arithmetic number, because the mean of its divisors is an integer number (41141061).

Almost surely, 2^212201213 is an apocalyptic number.

It is an amenable number.

212201213 is a deficient number, since it is larger than the sum of its proper divisors (34645153).

212201213 is an equidigital number, since it uses as much as digits as its factorization.

212201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4330651 (or 4330644 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 212201213 is about 14567.1278226011. The cubic root of 212201213 is about 596.4617806499.

Adding to 212201213 its reverse (312102212), we get a palindrome (524303425).

Subtracting 212201213 from its reverse (312102212), we obtain a palindrome (99900999).

The spelling of 212201213 in words is "two hundred twelve million, two hundred one thousand, two hundred thirteen".