12102001211161 has 2 divisors, whose sum is σ = 12102001211162. Its totient is φ = 12102001211160.

The previous prime is 12102001211159. The next prime is 12102001211221. The reversal of 12102001211161 is 16111210020121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7425248954761 + 4676752256400 = 2724931^2 + 2162580^2 .

It is a cyclic number.

It is not a de Polignac number, because 12102001211161 - 2¹ = 12102001211159 is a prime.

Together with 12102001211159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12102001217161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051000605580 + 6051000605581.

It is an arithmetic number, because the mean of its divisors is an integer number (6051000605581).

Almost surely, 2^{12102001211161} is an apocalyptic number.

It is an amenable number.

12102001211161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12102001211161 is an equidigital number, since it uses as much as digits as its factorization.

12102001211161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 12102001211161 its reverse (16111210020121), we get a palindrome (28213211231282).

The spelling of 12102001211161 in words is "twelve trillion, one hundred two billion, one million, two hundred eleven thousand, one hundred sixty-one".