121010220017 has 2 divisors, whose sum is σ = 121010220018. Its totient is φ = 121010220016.

The previous prime is 121010219989. The next prime is 121010220043. The reversal of 121010220017 is 710022010121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93198320656 + 27811899361 = 305284^2 + 166769^2 .

It is an emirp because it is prime and its reverse (710022010121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121010220017 - 2¹⁰ = 121010218993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121010219977 and 121010220004.

It is not a weakly prime, because it can be changed into another prime (121010223017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505110008 + 60505110009.

It is an arithmetic number, because the mean of its divisors is an integer number (60505110009).

Almost surely, 2^121010220017 is an apocalyptic number.

It is an amenable number.

121010220017 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010220017 is an equidigital number, since it uses as much as digits as its factorization.

121010220017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 121010220017 its reverse (710022010121), we get a palindrome (831032230138).

The spelling of 121010220017 in words is "one hundred twenty-one billion, ten million, two hundred twenty thousand, seventeen".