233221220311 has 16 divisors (see below), whose sum is σ = 258563923200. Its totient is φ = 209364870528.

The previous prime is 233221220303. The next prime is 233221220377. The reversal of 233221220311 is 113022122332.

It is not a de Polignac number, because 233221220311 - 2³ = 233221220303 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 (233221220381) 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, 2447106 + ... + 2540623.

It is an arithmetic number, because the mean of its divisors is an integer number (16160245200).

Almost surely, 2^233221220311 is an apocalyptic number.

233221220311 is a deficient number, since it is larger than the sum of its proper divisors (25342702889).

233221220311 is a wasteful number, since it uses less digits than its factorization.

233221220311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4987878.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 233221220311 its reverse (113022122332), we get a palindrome (346243342643).

The spelling of 233221220311 in words is "two hundred thirty-three billion, two hundred twenty-one million, two hundred twenty thousand, three hundred eleven".