233121021123 has 4 divisors (see below), whose sum is σ = 310828028168. Its totient is φ = 155414014080.

The previous prime is 233121021121. The next prime is 233121021173. The reversal of 233121021123 is 321120121332.

233121021123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 233121021123 - 2¹ = 233121021121 is a prime.

It is a super-2 number, since 2×233121021123² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 233121021123.

It is not an unprimeable number, because it can be changed into a prime (233121021121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38853503518 + ... + 38853503523.

It is an arithmetic number, because the mean of its divisors is an integer number (77707007042).

Almost surely, 2^233121021123 is an apocalyptic number.

233121021123 is a deficient number, since it is larger than the sum of its proper divisors (77707007045).

233121021123 is an equidigital number, since it uses as much as digits as its factorization.

233121021123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77707007044.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 233121021123 its reverse (321120121332), we get a palindrome (554241142455).

The spelling of 233121021123 in words is "two hundred thirty-three billion, one hundred twenty-one million, twenty-one thousand, one hundred twenty-three".