233222121311 has 4 divisors (see below), whose sum is σ = 233247588624. Its totient is φ = 233196654000.

The previous prime is 233222121281. The next prime is 233222121317. The reversal of 233222121311 is 113121222332.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-233222121311 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 (233222121317) 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, 12719915 + ... + 12738236.

It is an arithmetic number, because the mean of its divisors is an integer number (58311897156).

Almost surely, 2^233222121311 is an apocalyptic number.

233222121311 is a deficient number, since it is larger than the sum of its proper divisors (25467313).

233222121311 is an equidigital number, since it uses as much as digits as its factorization.

233222121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25467312.

The product of its digits is 864, while the sum is 23.

Adding to 233222121311 its reverse (113121222332), we get a palindrome (346343343643).

It can be divided in two parts, 2332221 and 21311, that added together give a palindrome (2353532).

The spelling of 233222121311 in words is "two hundred thirty-three billion, two hundred twenty-two million, one hundred twenty-one thousand, three hundred eleven".