213321205 has 16 divisors (see below), whose sum is σ = 270345600. Its totient is φ = 161263168.

The previous prime is 213321181. The next prime is 213321223. The reversal of 213321205 is 502123312.

It is a cyclic number.

It is not a de Polignac number, because 213321205 - 2⁹ = 213320693 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630 + ... + 20719.

It is an arithmetic number, because the mean of its divisors is an integer number (16896600).

Almost surely, 2^213321205 is an apocalyptic number.

It is an amenable number.

213321205 is a deficient number, since it is larger than the sum of its proper divisors (57024395).

213321205 is a wasteful number, since it uses less digits than its factorization.

213321205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22460.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 213321205 is about 14605.5196757938. The cubic root of 213321205 is about 597.5093093325.

Adding to 213321205 its reverse (502123312), we get a palindrome (715444517).

The spelling of 213321205 in words is "two hundred thirteen million, three hundred twenty-one thousand, two hundred five".