213212205 has 48 divisors (see below), whose sum is σ = 402480000. Its totient is φ = 104001408.

The previous prime is 213212179. The next prime is 213212261. The reversal of 213212205 is 502212312.

It is not a de Polignac number, because 213212205 - 2¹⁵ = 213179437 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20496 + ... + 29094.

It is an arithmetic number, because the mean of its divisors is an integer number (8385000).

Almost surely, 2^213212205 is an apocalyptic number.

It is an amenable number.

213212205 is a deficient number, since it is larger than the sum of its proper divisors (189267795).

213212205 is a wasteful number, since it uses less digits than its factorization.

213212205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8658 (or 8655 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 213212205 is about 14601.7877330141. The cubic root of 213212205 is about 597.4075229041.

Adding to 213212205 its reverse (502212312), we get a palindrome (715424517).

The spelling of 213212205 in words is "two hundred thirteen million, two hundred twelve thousand, two hundred five".