121120717 has 2 divisors, whose sum is σ = 121120718. Its totient is φ = 121120716.

The previous prime is 121120679. The next prime is 121120777. The reversal of 121120717 is 717021121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99321156 + 21799561 = 9966^2 + 4669^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121120777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560358 + 60560359.

It is an arithmetic number, because the mean of its divisors is an integer number (60560359).

Almost surely, 2^121120717 is an apocalyptic number.

It is an amenable number.

121120717 is a deficient number, since it is larger than the sum of its proper divisors (1).

121120717 is an equidigital number, since it uses as much as digits as its factorization.

121120717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 196, while the sum is 22.

The square root of 121120717 is about 11005.4857684702. The cubic root of 121120717 is about 494.7731736328.

Adding to 121120717 its reverse (717021121), we get a palindrome (838141838).

The spelling of 121120717 in words is "one hundred twenty-one million, one hundred twenty thousand, seven hundred seventeen".