216320265211 has 4 divisors (see below), whose sum is σ = 229044986712. Its totient is φ = 203595543712.

The previous prime is 216320265199. The next prime is 216320265241. The reversal of 216320265211 is 112562023612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216320265211 - 2⁵ = 216320265179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216320265241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6362360725 + ... + 6362360758.

It is an arithmetic number, because the mean of its divisors is an integer number (57261246678).

Almost surely, 2^216320265211 is an apocalyptic number.

216320265211 is a deficient number, since it is larger than the sum of its proper divisors (12724721501).

216320265211 is a wasteful number, since it uses less digits than its factorization.

216320265211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12724721500.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 216320265211 its reverse (112562023612), we get a palindrome (328882288823).

The spelling of 216320265211 in words is "two hundred sixteen billion, three hundred twenty million, two hundred sixty-five thousand, two hundred eleven".