213311211133 has 4 divisors (see below), whose sum is σ = 213350420988. Its totient is φ = 213272001280.

The previous prime is 213311211119. The next prime is 213311211173. The reversal of 213311211133 is 331112113312.

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 176431081369 + 36880129764 = 420037^2 + 192042^2 .

It is a cyclic number.

It is not a de Polignac number, because 213311211133 - 2⁹ = 213311210621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213311211103) 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, 19596766 + ... + 19607647.

It is an arithmetic number, because the mean of its divisors is an integer number (53337605247).

Almost surely, 2^213311211133 is an apocalyptic number.

It is an amenable number.

213311211133 is a deficient number, since it is larger than the sum of its proper divisors (39209855).

213311211133 is an equidigital number, since it uses as much as digits as its factorization.

213311211133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39209854.

The product of its digits is 324, while the sum is 22.

Adding to 213311211133 its reverse (331112113312), we get a palindrome (544423324445).

The spelling of 213311211133 in words is "two hundred thirteen billion, three hundred eleven million, two hundred eleven thousand, one hundred thirty-three".