121112102017 has 2 divisors, whose sum is σ = 121112102018. Its totient is φ = 121112102016.

The previous prime is 121112102011. The next prime is 121112102039. The reversal of 121112102017 is 710201211121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93141546481 + 27970555536 = 305191^2 + 167244^2 .

It is a cyclic number.

It is not a de Polignac number, because 121112102017 - 2³ = 121112102009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121112101985 and 121112102003.

It is not a weakly prime, because it can be changed into another prime (121112102011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60556051008 + 60556051009.

It is an arithmetic number, because the mean of its divisors is an integer number (60556051009).

Almost surely, 2^121112102017 is an apocalyptic number.

It is an amenable number.

121112102017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121112102017 is an equidigital number, since it uses as much as digits as its factorization.

121112102017 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 19.

Adding to 121112102017 its reverse (710201211121), we get a palindrome (831313313138).

The spelling of 121112102017 in words is "one hundred twenty-one billion, one hundred twelve million, one hundred two thousand, seventeen".