121210120110017 has 2 divisors, whose sum is σ = 121210120110018. Its totient is φ = 121210120110016.

The previous prime is 121210120110011. The next prime is 121210120110097. The reversal of 121210120110017 is 710011021012121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118678342693681 + 2531777416336 = 10893959^2 + 1591156^2 .

It is a cyclic number.

It is not a de Polignac number, because 121210120110017 - 2²⁶ = 121210053001153 is a prime.

It is not a weakly prime, because it can be changed into another prime (121210120110011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60605060055008 + 60605060055009.

It is an arithmetic number, because the mean of its divisors is an integer number (60605060055009).

Almost surely, 2^{121210120110017} is an apocalyptic number.

It is an amenable number.

121210120110017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121210120110017 is an equidigital number, since it uses as much as digits as its factorization.

121210120110017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 121210120110017 its reverse (710011021012121), we get a palindrome (831221141122138).

The spelling of 121210120110017 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty million, one hundred ten thousand, seventeen".