121716971417 has 2 divisors, whose sum is σ = 121716971418. Its totient is φ = 121716971416.

The previous prime is 121716971401. The next prime is 121716971437. The reversal of 121716971417 is 714179617121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119397200521 + 2319770896 = 345539^2 + 48164^2 .

It is a cyclic number.

It is not a de Polignac number, because 121716971417 - 2⁴ = 121716971401 is a prime.

It is a super-2 number, since 2×121716971417² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121716971437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60858485708 + 60858485709.

It is an arithmetic number, because the mean of its divisors is an integer number (60858485709).

Almost surely, 2^121716971417 is an apocalyptic number.

It is an amenable number.

121716971417 is a deficient number, since it is larger than the sum of its proper divisors (1).

121716971417 is an equidigital number, since it uses as much as digits as its factorization.

121716971417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 148176, while the sum is 47.

The spelling of 121716971417 in words is "one hundred twenty-one billion, seven hundred sixteen million, nine hundred seventy-one thousand, four hundred seventeen".