213211000122311 has 12 divisors (see below), whose sum is σ = 215417728598400. Its totient is φ = 211026646982400.

The previous prime is 213211000122293. The next prime is 213211000122343. The reversal of 213211000122311 is 113221000112312.

It is not a de Polignac number, because 213211000122311 - 2⁶ = 213211000122247 is a prime.

It is a super-2 number, since 2×213211000122311² (a number of 29 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 (213211000122611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25738775 + ... + 32998583.

It is an arithmetic number, because the mean of its divisors is an integer number (17951477383200).

Almost surely, 2^{213211000122311} is an apocalyptic number.

213211000122311 is a deficient number, since it is larger than the sum of its proper divisors (2206728476089).

213211000122311 is an equidigital number, since it uses as much as digits as its factorization.

213211000122311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262890 (or 7262789 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 213211000122311 its reverse (113221000112312), we get a palindrome (326432000234623).

Subtracting from 213211000122311 its reverse (113221000112312), we obtain a palindrome (99990000009999).

The spelling of 213211000122311 in words is "two hundred thirteen trillion, two hundred eleven billion, one hundred twenty-two thousand, three hundred eleven".