213033242321 has 4 divisors (see below), whose sum is σ = 215229461412. Its totient is φ = 210837023232.

The previous prime is 213033242311. The next prime is 213033242327. The reversal of 213033242321 is 123242330312.

It is a happy number.

213033242321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 63968526400 + 149064715921 = 252920^2 + 386089^2 .

It is a cyclic number.

It is not a de Polignac number, because 213033242321 - 2¹⁸ = 213032980177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213033242327) 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, 1098109400 + ... + 1098109593.

It is an arithmetic number, because the mean of its divisors is an integer number (53807365353).

Almost surely, 2^213033242321 is an apocalyptic number.

It is an amenable number.

213033242321 is a deficient number, since it is larger than the sum of its proper divisors (2196219091).

213033242321 is an equidigital number, since it uses as much as digits as its factorization.

213033242321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2196219090.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 213033242321 its reverse (123242330312), we get a palindrome (336275572633).

The spelling of 213033242321 in words is "two hundred thirteen billion, thirty-three million, two hundred forty-two thousand, three hundred twenty-one".