213320242221 has 8 divisors (see below), whose sum is σ = 285533710464. Its totient is φ = 141660134400.

The previous prime is 213320242207. The next prime is 213320242229. The reversal of 213320242221 is 122242023312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213320242221 - 2¹⁸ = 213319980077 is a prime.

It is a super-2 number, since 2×213320242221² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213320242191 and 213320242200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213320242229) 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 7 ways as a sum of consecutive naturals, for example, 138339205 + ... + 138340746.

It is an arithmetic number, because the mean of its divisors is an integer number (35691713808).

Almost surely, 2^213320242221 is an apocalyptic number.

It is an amenable number.

213320242221 is a deficient number, since it is larger than the sum of its proper divisors (72213468243).

213320242221 is a wasteful number, since it uses less digits than its factorization.

213320242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276680211.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 213320242221 its reverse (122242023312), we get a palindrome (335562265533).

The spelling of 213320242221 in words is "two hundred thirteen billion, three hundred twenty million, two hundred forty-two thousand, two hundred twenty-one".