213012210013 has 4 divisors (see below), whose sum is σ = 213019026748. Its totient is φ = 213005393280.

The previous prime is 213012209989. The next prime is 213012210049. The reversal of 213012210013 is 310012210312.

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 202835839129 + 10176370884 = 450373^2 + 100878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213012210013 is a prime.

It is a super-2 number, since 2×213012210013² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213012210913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3361278 + ... + 3424063.

It is an arithmetic number, because the mean of its divisors is an integer number (53254756687).

Almost surely, 2^213012210013 is an apocalyptic number.

It is an amenable number.

213012210013 is a deficient number, since it is larger than the sum of its proper divisors (6816735).

213012210013 is an equidigital number, since it uses as much as digits as its factorization.

213012210013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6816734.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213012210013 its reverse (310012210312), we get a palindrome (523024420325).

The spelling of 213012210013 in words is "two hundred thirteen billion, twelve million, two hundred ten thousand, thirteen".