12121443101017 has 2 divisors, whose sum is σ = 12121443101018. Its totient is φ = 12121443101016.

The previous prime is 12121443100979. The next prime is 12121443101113. The reversal of 12121443101017 is 71010134412121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11098066053376 + 1023377047641 = 3331376^2 + 1011621^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121443101017 - 2¹¹ = 12121443098969 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121443101717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060721550508 + 6060721550509.

It is an arithmetic number, because the mean of its divisors is an integer number (6060721550509).

Almost surely, 2^{12121443101017} is an apocalyptic number.

It is an amenable number.

12121443101017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121443101017 is an equidigital number, since it uses as much as digits as its factorization.

12121443101017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 28.

Adding to 12121443101017 its reverse (71010134412121), we get a palindrome (83131577513138).

The spelling of 12121443101017 in words is "twelve trillion, one hundred twenty-one billion, four hundred forty-three million, one hundred one thousand, seventeen".