213305211054113 has 4 divisors (see below), whose sum is σ = 213317772475668. Its totient is φ = 213292649632560.

The previous prime is 213305211054109. The next prime is 213305211054119. The reversal of 213305211054113 is 311450112503312.

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 188390667900304 + 24914543153809 = 13725548^2 + 4991447^2 .

It is a cyclic number.

It is not a de Polignac number, because 213305211054113 - 2² = 213305211054109 is a prime.

It is a super-2 number, since 2×213305211054113² (a number of 29 digits) contains 22 as substring.

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 213305211054113.

It is not an unprimeable number, because it can be changed into a prime (213305211054119) 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, 6280685306 + ... + 6280719267.

It is an arithmetic number, because the mean of its divisors is an integer number (53329443118917).

Almost surely, 2^{213305211054113} is an apocalyptic number.

It is an amenable number.

213305211054113 is a deficient number, since it is larger than the sum of its proper divisors (12561421555).

213305211054113 is a wasteful number, since it uses less digits than its factorization.

213305211054113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12561421554.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 213305211054113 its reverse (311450112503312), we get a palindrome (524755323557425).

The spelling of 213305211054113 in words is "two hundred thirteen trillion, three hundred five billion, two hundred eleven million, fifty-four thousand, one hundred thirteen".