213201210133 has 4 divisors (see below), whose sum is σ = 213210917388. Its totient is φ = 213191502880.

The previous prime is 213201210097. The next prime is 213201210163. The reversal of 213201210133 is 331012102312.

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 49125176164 + 164076033969 = 221642^2 + 405063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213201210133 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213201210133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213201210163) 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, 4820608 + ... + 4864633.

It is an arithmetic number, because the mean of its divisors is an integer number (53302729347).

Almost surely, 2^213201210133 is an apocalyptic number.

It is an amenable number.

213201210133 is a deficient number, since it is larger than the sum of its proper divisors (9707255).

213201210133 is an equidigital number, since it uses as much as digits as its factorization.

213201210133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9707254.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213201210133 its reverse (331012102312), we get a palindrome (544213312445).

The spelling of 213201210133 in words is "two hundred thirteen billion, two hundred one million, two hundred ten thousand, one hundred thirty-three".