213322205 has 16 divisors (see below), whose sum is σ = 278374320. Its totient is φ = 156275712.

The previous prime is 213322189. The next prime is 213322211. The reversal of 213322205 is 502223312.

It can be written as a sum of positive squares in 8 ways, for example, as 34351321 + 178970884 = 5861^2 + 13378^2 .

It is a cyclic number.

It is not a de Polignac number, because 213322205 - 2⁴ = 213322189 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, 30770 + ... + 37059.

It is an arithmetic number, because the mean of its divisors is an integer number (17398395).

Almost surely, 2^213322205 is an apocalyptic number.

It is an amenable number.

213322205 is a deficient number, since it is larger than the sum of its proper divisors (65052115).

213322205 is a wasteful number, since it uses less digits than its factorization.

213322205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67888.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 213322205 is about 14605.5539093867. The cubic root of 213322205 is about 597.5102429924.

Adding to 213322205 its reverse (502223312), we get a palindrome (715545517).

The spelling of 213322205 in words is "two hundred thirteen million, three hundred twenty-two thousand, two hundred five".