211323100133 has 4 divisors (see below), whose sum is σ = 211339063500. Its totient is φ = 211307136768.

The previous prime is 211323100123. The next prime is 211323100141. The reversal of 211323100133 is 331001323112.

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 103517914564 + 107805185569 = 321742^2 + 328337^2 .

It is a cyclic number.

It is not a de Polignac number, because 211323100133 - 2¹⁰ = 211323099109 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 (211323100123) 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, 7961810 + ... + 7988307.

It is an arithmetic number, because the mean of its divisors is an integer number (52834765875).

Almost surely, 2^211323100133 is an apocalyptic number.

It is an amenable number.

211323100133 is a deficient number, since it is larger than the sum of its proper divisors (15963367).

211323100133 is a wasteful number, since it uses less digits than its factorization.

211323100133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15963366.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 211323100133 its reverse (331001323112), we get a palindrome (542324423245).

The spelling of 211323100133 in words is "two hundred eleven billion, three hundred twenty-three million, one hundred thousand, one hundred thirty-three".