121320110323169 has 2 divisors, whose sum is σ = 121320110323170. Its totient is φ = 121320110323168.

The previous prime is 121320110323109. The next prime is 121320110323171. The reversal of 121320110323169 is 961323011023121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85461427366225 + 35858682956944 = 9244535^2 + 5988212^2 .

It is a cyclic number.

It is not a de Polignac number, because 121320110323169 - 2⁸ = 121320110322913 is a prime.

It is a super-2 number, since 2×121320110323169² (a number of 29 digits) contains 22 as substring.

Together with 121320110323171, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (121320110323109) 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, 60660055161584 + 60660055161585.

It is an arithmetic number, because the mean of its divisors is an integer number (60660055161585).

Almost surely, 2^{121320110323169} is an apocalyptic number.

It is an amenable number.

121320110323169 is a deficient number, since it is larger than the sum of its proper divisors (1).

121320110323169 is an equidigital number, since it uses as much as digits as its factorization.

121320110323169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 35.

The spelling of 121320110323169 in words is "one hundred twenty-one trillion, three hundred twenty billion, one hundred ten million, three hundred twenty-three thousand, one hundred sixty-nine".