121713087017 has 2 divisors, whose sum is σ = 121713087018. Its totient is φ = 121713087016.

The previous prime is 121713087007. The next prime is 121713087053. The reversal of 121713087017 is 710780317121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98910879001 + 22802208016 = 314501^2 + 151004^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121713087017 is a prime.

It is not a weakly prime, because it can be changed into another prime (121713087007) 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, 60856543508 + 60856543509.

It is an arithmetic number, because the mean of its divisors is an integer number (60856543509).

Almost surely, 2^121713087017 is an apocalyptic number.

It is an amenable number.

121713087017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121713087017 is an equidigital number, since it uses as much as digits as its factorization.

121713087017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16464, while the sum is 38.

The spelling of 121713087017 in words is "one hundred twenty-one billion, seven hundred thirteen million, eighty-seven thousand, seventeen".