8112121161611 has 2 divisors, whose sum is σ = 8112121161612. Its totient is φ = 8112121161610.

The previous prime is 8112121161497. The next prime is 8112121161619. The reversal of 8112121161611 is 1161611212118.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8112121161611 is a prime.

It is not a weakly prime, because it can be changed into another prime (8112121161619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056060580805 + 4056060580806.

It is an arithmetic number, because the mean of its divisors is an integer number (4056060580806).

Almost surely, 2^{8112121161611} is an apocalyptic number.

8112121161611 is a deficient number, since it is larger than the sum of its proper divisors (1).

8112121161611 is an equidigital number, since it uses as much as digits as its factorization.

8112121161611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 32.

Adding to 8112121161611 its reverse (1161611212118), we get a palindrome (9273732373729).

The spelling of 8112121161611 in words is "eight trillion, one hundred twelve billion, one hundred twenty-one million, one hundred sixty-one thousand, six hundred eleven".