121600169 has 2 divisors, whose sum is σ = 121600170. Its totient is φ = 121600168.

The previous prime is 121600163. The next prime is 121600177. The reversal of 121600169 is 961006121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115777600 + 5822569 = 10760^2 + 2413^2 .

It is a cyclic number.

It is not a de Polignac number, because 121600169 - 2⁸ = 121599913 is a prime.

It is a super-2 number, since 2×121600169² = 29573202201657122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121600163) 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, 60800084 + 60800085.

It is an arithmetic number, because the mean of its divisors is an integer number (60800085).

Almost surely, 2^121600169 is an apocalyptic number.

It is an amenable number.

121600169 is a deficient number, since it is larger than the sum of its proper divisors (1).

121600169 is an equidigital number, since it uses as much as digits as its factorization.

121600169 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 121600169 is about 11027.2466645124. The cubic root of 121600169 is about 495.4251613663.

The spelling of 121600169 in words is "one hundred twenty-one million, six hundred thousand, one hundred sixty-nine".