121166579 has 2 divisors, whose sum is σ = 121166580. Its totient is φ = 121166578.

The previous prime is 121166567. The next prime is 121166581. The reversal of 121166579 is 975661121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121166579 is a prime.

It is a Sophie Germain prime.

Together with 121166581, 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 (121166519) 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, 60583289 + 60583290.

It is an arithmetic number, because the mean of its divisors is an integer number (60583290).

Almost surely, 2^121166579 is an apocalyptic number.

121166579 is a deficient number, since it is larger than the sum of its proper divisors (1).

121166579 is an equidigital number, since it uses as much as digits as its factorization.

121166579 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 38.

The square root of 121166579 is about 11007.5691685313. The cubic root of 121166579 is about 494.8356138837.

The spelling of 121166579 in words is "one hundred twenty-one million, one hundred sixty-six thousand, five hundred seventy-nine".