121376170233509 has 2 divisors, whose sum is σ = 121376170233510. Its totient is φ = 121376170233508.

The previous prime is 121376170233377. The next prime is 121376170233551. The reversal of 121376170233509 is 905332071673121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97227054302884 + 24149115930625 = 9860378^2 + 4914175^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121376170233509 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121376170233589) 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, 60688085116754 + 60688085116755.

It is an arithmetic number, because the mean of its divisors is an integer number (60688085116755).

Almost surely, 2^{121376170233509} is an apocalyptic number.

It is an amenable number.

121376170233509 is a deficient number, since it is larger than the sum of its proper divisors (1).

121376170233509 is an equidigital number, since it uses as much as digits as its factorization.

121376170233509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The spelling of 121376170233509 in words is "one hundred twenty-one trillion, three hundred seventy-six billion, one hundred seventy million, two hundred thirty-three thousand, five hundred nine".