120211021011017 has 2 divisors, whose sum is σ = 120211021011018. Its totient is φ = 120211021011016.

The previous prime is 120211021010981. The next prime is 120211021011023. The reversal of 120211021011017 is 710110120112021.

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., 63606749947456 + 56604271063561 = 7975384^2 + 7523581^2 .

It is a cyclic number.

It is not a de Polignac number, because 120211021011017 - 2¹⁰ = 120211021009993 is a prime.

It is a super-2 number, since 2×120211021011017² (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 120211021011017.

It is not a weakly prime, because it can be changed into another prime (120211021011517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105510505508 + 60105510505509.

It is an arithmetic number, because the mean of its divisors is an integer number (60105510505509).

Almost surely, 2^{120211021011017} is an apocalyptic number.

It is an amenable number.

120211021011017 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211021011017 is an equidigital number, since it uses as much as digits as its factorization.

120211021011017 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 120211021011017 its reverse (710110120112021), we get a palindrome (830321141123038).

The spelling of 120211021011017 in words is "one hundred twenty trillion, two hundred eleven billion, twenty-one million, eleven thousand, seventeen".