120021201111017 has 2 divisors, whose sum is σ = 120021201111018. Its totient is φ = 120021201111016.

The previous prime is 120021201110953. The next prime is 120021201111043. The reversal of 120021201111017 is 710111102120021.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114312427506601 + 5708773604416 = 10691699^2 + 2389304^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021201111017 - 2⁶ = 120021201110953 is a prime.

It is a super-2 number, since 2×120021201111017² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120021201111017.

It is not a weakly prime, because it can be changed into another prime (120021201131017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010600555508 + 60010600555509.

It is an arithmetic number, because the mean of its divisors is an integer number (60010600555509).

Almost surely, 2^{120021201111017} is an apocalyptic number.

It is an amenable number.

120021201111017 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021201111017 is an equidigital number, since it uses as much as digits as its factorization.

120021201111017 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 120021201111017 its reverse (710111102120021), we get a palindrome (830132303231038).

The spelling of 120021201111017 in words is "one hundred twenty trillion, twenty-one billion, two hundred one million, one hundred eleven thousand, seventeen".