121585117 has 2 divisors, whose sum is σ = 121585118. Its totient is φ = 121585116.

The previous prime is 121585111. The next prime is 121585129. The reversal of 121585117 is 711585121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103103716 + 18481401 = 10154^2 + 4299^2 .

It is a cyclic number.

It is not a de Polignac number, because 121585117 - 2³ = 121585109 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121585111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60792558 + 60792559.

It is an arithmetic number, because the mean of its divisors is an integer number (60792559).

Almost surely, 2^121585117 is an apocalyptic number.

It is an amenable number.

121585117 is a deficient number, since it is larger than the sum of its proper divisors (1).

121585117 is an equidigital number, since it uses as much as digits as its factorization.

121585117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 31.

The square root of 121585117 is about 11026.5641520829. The cubic root of 121585117 is about 495.4047188310.

The spelling of 121585117 in words is "one hundred twenty-one million, five hundred eighty-five thousand, one hundred seventeen".