12041321244221 has 4 divisors (see below), whose sum is σ = 12268515984732. Its totient is φ = 11814126503712.

The previous prime is 12041321244163. The next prime is 12041321244257. The reversal of 12041321244221 is 12244212314021.

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 6214475623225 + 5826845620996 = 2492885^2 + 2413886^2 .

It is a cyclic number.

It is not a de Polignac number, because 12041321244221 - 2³⁸ = 11766443337277 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 (12041321234221) 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, 113597370176 + ... + 113597370281.

It is an arithmetic number, because the mean of its divisors is an integer number (3067128996183).

Almost surely, 2^{12041321244221} is an apocalyptic number.

It is an amenable number.

12041321244221 is a deficient number, since it is larger than the sum of its proper divisors (227194740511).

12041321244221 is an equidigital number, since it uses as much as digits as its factorization.

12041321244221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227194740510.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 12041321244221 its reverse (12244212314021), we get a palindrome (24285533558242).

The spelling of 12041321244221 in words is "twelve trillion, forty-one billion, three hundred twenty-one million, two hundred forty-four thousand, two hundred twenty-one".