12001442232121 has 2 divisors, whose sum is σ = 12001442232122. Its totient is φ = 12001442232120.

The previous prime is 12001442232119. The next prime is 12001442232167. The reversal of 12001442232121 is 12123224410021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9164454471225 + 2836987760896 = 3027285^2 + 1684336^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001442232121 - 2¹ = 12001442232119 is a prime.

Together with 12001442232119, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12001442232191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000721116060 + 6000721116061.

It is an arithmetic number, because the mean of its divisors is an integer number (6000721116061).

Almost surely, 2^{12001442232121} is an apocalyptic number.

It is an amenable number.

12001442232121 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001442232121 is an equidigital number, since it uses as much as digits as its factorization.

12001442232121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 12001442232121 its reverse (12123224410021), we get a palindrome (24124666642142).

The spelling of 12001442232121 in words is "twelve trillion, one billion, four hundred forty-two million, two hundred thirty-two thousand, one hundred twenty-one".