233121011010121 has 4 divisors (see below), whose sum is σ = 251053396472452. Its totient is φ = 215188625547792.

The previous prime is 233121011010119. The next prime is 233121011010163. The reversal of 233121011010121 is 121010110121332.

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

It can be written as a sum of positive squares in 2 ways, for example, as 63731306609721 + 169389704400400 = 7983189^2 + 13014980^2 .

It is not a de Polignac number, because 233121011010121 - 2¹ = 233121011010119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233121011010191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8966192731146 + ... + 8966192731171.

It is an arithmetic number, because the mean of its divisors is an integer number (62763349118113).

Almost surely, 2^{233121011010121} is an apocalyptic number.

It is an amenable number.

233121011010121 is a deficient number, since it is larger than the sum of its proper divisors (17932385462331).

233121011010121 is a wasteful number, since it uses less digits than its factorization.

233121011010121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17932385462330.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 233121011010121 its reverse (121010110121332), we get a palindrome (354131121131453).

The spelling of 233121011010121 in words is "two hundred thirty-three trillion, one hundred twenty-one billion, eleven million, ten thousand, one hundred twenty-one".