12121323201233 has 4 divisors (see below), whose sum is σ = 12128856654180. Its totient is φ = 12113789748288.

The previous prime is 12121323201223. The next prime is 12121323201293. The reversal of 12121323201233 is 33210232312121.

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 8238346543504 + 3882976657729 = 2870252^2 + 1970527^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121323201233 - 2²⁸ = 12121054765777 is a prime.

It is a super-2 number, since 2×12121323201233² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12121323201223) 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, 3766724060 + ... + 3766727277.

It is an arithmetic number, because the mean of its divisors is an integer number (3032214163545).

Almost surely, 2^{12121323201233} is an apocalyptic number.

It is an amenable number.

12121323201233 is a deficient number, since it is larger than the sum of its proper divisors (7533452947).

12121323201233 is an equidigital number, since it uses as much as digits as its factorization.

12121323201233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7533452946.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12121323201233 its reverse (33210232312121), we get a palindrome (45331555513354).

The spelling of 12121323201233 in words is "twelve trillion, one hundred twenty-one billion, three hundred twenty-three million, two hundred one thousand, two hundred thirty-three".