12001221211241 has 2 divisors, whose sum is σ = 12001221211242. Its totient is φ = 12001221211240.

The previous prime is 12001221211159. The next prime is 12001221211319. The reversal of 12001221211241 is 14211212210021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8037060570841 + 3964160640400 = 2834971^2 + 1991020^2 .

It is a cyclic number.

It is not a de Polignac number, because 12001221211241 - 2¹⁸ = 12001220949097 is a prime.

It is a super-2 number, since 2×12001221211241² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12001221211541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000610605620 + 6000610605621.

It is an arithmetic number, because the mean of its divisors is an integer number (6000610605621).

Almost surely, 2^{12001221211241} is an apocalyptic number.

It is an amenable number.

12001221211241 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001221211241 is an equidigital number, since it uses as much as digits as its factorization.

12001221211241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 12001221211241 its reverse (14211212210021), we get a palindrome (26212433421262).

The spelling of 12001221211241 in words is "twelve trillion, one billion, two hundred twenty-one million, two hundred eleven thousand, two hundred forty-one".