211323331321 has 16 divisors (see below), whose sum is σ = 221508403200. Its totient is φ = 201221930448.

The previous prime is 211323331279. The next prime is 211323331333. The reversal of 211323331321 is 123133323112.

It is a cyclic number.

It is not a de Polignac number, because 211323331321 - 2²⁷ = 211189113593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211323311321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25496440 + ... + 25504726.

It is an arithmetic number, because the mean of its divisors is an integer number (13844275200).

Almost surely, 2^211323331321 is an apocalyptic number.

It is an amenable number.

211323331321 is a deficient number, since it is larger than the sum of its proper divisors (10185071879).

211323331321 is a wasteful number, since it uses less digits than its factorization.

211323331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13188.

The product of its digits is 1944, while the sum is 25.

Adding to 211323331321 its reverse (123133323112), we get a palindrome (334456654433).

The spelling of 211323331321 in words is "two hundred eleven billion, three hundred twenty-three million, three hundred thirty-one thousand, three hundred twenty-one".