213321302213 has 4 divisors (see below), whose sum is σ = 214680036780. Its totient is φ = 211962567648.

The previous prime is 213321302191. The next prime is 213321302273. The reversal of 213321302213 is 312203123312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42224907169 + 171096395044 = 205487^2 + 413638^2 .

It is a cyclic number.

It is not a de Polignac number, because 213321302213 - 2¹⁰ = 213321301189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213321302273) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 679367048 + ... + 679367361.

It is an arithmetic number, because the mean of its divisors is an integer number (53670009195).

Almost surely, 2^213321302213 is an apocalyptic number.

It is an amenable number.

213321302213 is a deficient number, since it is larger than the sum of its proper divisors (1358734567).

213321302213 is a wasteful number, since it uses less digits than its factorization.

213321302213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358734566.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213321302213 its reverse (312203123312), we get a palindrome (525524425525).

The spelling of 213321302213 in words is "two hundred thirteen billion, three hundred twenty-one million, three hundred two thousand, two hundred thirteen".