12121141211161 has 2 divisors, whose sum is σ = 12121141211162. Its totient is φ = 12121141211160.

The previous prime is 12121141211117. The next prime is 12121141211167. The reversal of 12121141211161 is 16111214112121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6591029290000 + 5530111921161 = 2567300^2 + 2351619^2 .

It is a cyclic number.

It is not a de Polignac number, because 12121141211161 - 2⁹ = 12121141210649 is a prime.

It is not a weakly prime, because it can be changed into another prime (12121141211167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6060570605580 + 6060570605581.

It is an arithmetic number, because the mean of its divisors is an integer number (6060570605581).

Almost surely, 2^{12121141211161} is an apocalyptic number.

It is an amenable number.

12121141211161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12121141211161 is an equidigital number, since it uses as much as digits as its factorization.

12121141211161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 25.

Adding to 12121141211161 its reverse (16111214112121), we get a palindrome (28232355323282).

The spelling of 12121141211161 in words is "twelve trillion, one hundred twenty-one billion, one hundred forty-one million, two hundred eleven thousand, one hundred sixty-one".