233123331221 has 12 divisors (see below), whose sum is σ = 257457450432. Its totient is φ = 210925869000.

The previous prime is 233123331169. The next prime is 233123331223. The reversal of 233123331221 is 122133321332.

It is not a de Polignac number, because 233123331221 - 2⁶ = 233123331157 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 (233123331223) 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, 4539965 + ... + 4591026.

It is an arithmetic number, because the mean of its divisors is an integer number (21454787536).

Almost surely, 2^233123331221 is an apocalyptic number.

It is an amenable number.

233123331221 is a deficient number, since it is larger than the sum of its proper divisors (24334119211).

233123331221 is a wasteful number, since it uses less digits than its factorization.

233123331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9131224 (or 9131213 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 233123331221 its reverse (122133321332), we get a palindrome (355256652553).

It can be divided in two parts, 23312 and 3331221, that added together give a palindrome (3354533).

The spelling of 233123331221 in words is "two hundred thirty-three billion, one hundred twenty-three million, three hundred thirty-one thousand, two hundred twenty-one".