213213123211 has 8 divisors (see below), whose sum is σ = 232744587264. Its totient is φ = 193706401320.

The previous prime is 213213123187. The next prime is 213213123217. The reversal of 213213123211 is 112321312312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213213123211 - 2⁷ = 213213123083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213213123217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6167515 + ... + 6201988.

It is an arithmetic number, because the mean of its divisors is an integer number (29093073408).

Almost surely, 2^213213123211 is an apocalyptic number.

213213123211 is a deficient number, since it is larger than the sum of its proper divisors (19531464053).

213213123211 is a wasteful number, since it uses less digits than its factorization.

213213123211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12371081.

The product of its digits is 432, while the sum is 22.

Adding to 213213123211 its reverse (112321312312), we get a palindrome (325534435523).

The spelling of 213213123211 in words is "two hundred thirteen billion, two hundred thirteen million, one hundred twenty-three thousand, two hundred eleven".