212204205 has 40 divisors (see below), whose sum is σ = 384164352. Its totient is φ = 112054752.

The previous prime is 212204197. The next prime is 212204221. The reversal of 212204205 is 502402212.

212204205 is a `hidden beast` number, since 21 + 220 + 420 + 5 = 666.

It is not a de Polignac number, because 212204205 - 2³ = 212204197 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 39172 + ... + 44258.

Almost surely, 2^212204205 is an apocalyptic number.

It is an amenable number.

212204205 is a deficient number, since it is larger than the sum of its proper divisors (171960147).

212204205 is a wasteful number, since it uses less digits than its factorization.

212204205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5207 (or 5198 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 212204205 is about 14567.2305192168. The cubic root of 212204205 is about 596.4645839723.

Adding to 212204205 its reverse (502402212), we get a palindrome (714606417).

It can be divided in two parts, 21220 and 4205, that added together give a triangular number (25425 = T₂₂₅).

The spelling of 212204205 in words is "two hundred twelve million, two hundred four thousand, two hundred five".