1020123222017 has 2 divisors, whose sum is σ = 1020123222018. Its totient is φ = 1020123222016.

The previous prime is 1020123221989. The next prime is 1020123222071. The reversal of 1020123222017 is 7102223210201.

Together with next prime (1020123222071) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 955625508721 + 64497713296 = 977561^2 + 253964^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020123222017 - 2¹⁰ = 1020123220993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020123221983 and 1020123222001.

It is not a weakly prime, because it can be changed into another prime (1020123222617) 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, 510061611008 + 510061611009.

It is an arithmetic number, because the mean of its divisors is an integer number (510061611009).

Almost surely, 2^{1020123222017} is an apocalyptic number.

It is an amenable number.

1020123222017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020123222017 is an equidigital number, since it uses as much as digits as its factorization.

1020123222017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 1020123222017 its reverse (7102223210201), we get a palindrome (8122346432218).

The spelling of 1020123222017 in words is "one trillion, twenty billion, one hundred twenty-three million, two hundred twenty-two thousand, seventeen".