213300221 has 4 divisors (see below), whose sum is σ = 213376992. Its totient is φ = 213223452.

The previous prime is 213300211. The next prime is 213300277. The reversal of 213300221 is 122003312.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213300221 - 2¹⁰ = 213299197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213300196 and 213300205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213300211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34055 + ... + 39828.

It is an arithmetic number, because the mean of its divisors is an integer number (53344248).

Almost surely, 2^213300221 is an apocalyptic number.

It is an amenable number.

213300221 is a deficient number, since it is larger than the sum of its proper divisors (76771).

213300221 is an equidigital number, since it uses as much as digits as its factorization.

213300221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76770.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 213300221 is about 14604.8012995727. The cubic root of 213300221 is about 597.4897167397.

Adding to 213300221 its reverse (122003312), we get a palindrome (335303533).

The spelling of 213300221 in words is "two hundred thirteen million, three hundred thousand, two hundred twenty-one".