213202021013 has 4 divisors (see below), whose sum is σ = 218402070348. Its totient is φ = 208001971680.

The previous prime is 213202020923. The next prime is 213202021027. The reversal of 213202021013 is 310120202312.

213202021013 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 44858392804 + 168343628209 = 211798^2 + 410297^2 .

It is a cyclic number.

It is not a de Polignac number, because 213202021013 - 2²⁶ = 213134912149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213202020982 and 213202021000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213202021213) 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, 2600024606 + ... + 2600024687.

It is an arithmetic number, because the mean of its divisors is an integer number (54600517587).

Almost surely, 2^213202021013 is an apocalyptic number.

It is an amenable number.

213202021013 is a deficient number, since it is larger than the sum of its proper divisors (5200049335).

213202021013 is an equidigital number, since it uses as much as digits as its factorization.

213202021013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5200049334.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213202021013 its reverse (310120202312), we get a palindrome (523322223325).

The spelling of 213202021013 in words is "two hundred thirteen billion, two hundred two million, twenty-one thousand, thirteen".