213204205252 has 12 divisors (see below), whose sum is σ = 377299577340. Its totient is φ = 105404326016.

The previous prime is 213204205171. The next prime is 213204205261. The reversal of 213204205252 is 252502402312.

It can be written as a sum of positive squares in 2 ways, for example, as 29348486596 + 183855718656 = 171314^2 + 428784^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 213204205252.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299443753 + ... + 299444464.

It is an arithmetic number, because the mean of its divisors is an integer number (31441631445).

Almost surely, 2^213204205252 is an apocalyptic number.

It is an amenable number.

213204205252 is a deficient number, since it is larger than the sum of its proper divisors (164095372088).

213204205252 is a wasteful number, since it uses less digits than its factorization.

213204205252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598888310 (or 598888308 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 213204205252 its reverse (252502402312), we get a palindrome (465706607564).

The spelling of 213204205252 in words is "two hundred thirteen billion, two hundred four million, two hundred five thousand, two hundred fifty-two".