1210021122017 has 2 divisors, whose sum is σ = 1210021122018. Its totient is φ = 1210021122016.

The previous prime is 1210021121957. The next prime is 1210021122061. The reversal of 1210021122017 is 7102211200121.

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., 770446818001 + 439574304016 = 877751^2 + 663004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210021122017 - 2¹⁰ = 1210021120993 is a prime.

It is a super-2 number, since 2×1210021122017² (a number of 25 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 1210021122017.

It is not a weakly prime, because it can be changed into another prime (1210021122097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605010561008 + 605010561009.

It is an arithmetic number, because the mean of its divisors is an integer number (605010561009).

Almost surely, 2^{1210021122017} is an apocalyptic number.

It is an amenable number.

1210021122017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210021122017 is an equidigital number, since it uses as much as digits as its factorization.

1210021122017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1210021122017 its reverse (7102211200121), we get a palindrome (8312232322138).

The spelling of 1210021122017 in words is "one trillion, two hundred ten billion, twenty-one million, one hundred twenty-two thousand, seventeen".