1021112202017 has 2 divisors, whose sum is σ = 1021112202018. Its totient is φ = 1021112202016.

The previous prime is 1021112201951. The next prime is 1021112202037. The reversal of 1021112202017 is 7102022111201.

It is a happy number.

It is an a-pointer prime, because the next prime (1021112202037) can be obtained adding 1021112202017 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 642291647761 + 378820554256 = 801431^2 + 615484^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021112202017 - 2¹⁰ = 1021112200993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1021112202017.

It is not a weakly prime, because it can be changed into another prime (1021112202037) 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, 510556101008 + 510556101009.

It is an arithmetic number, because the mean of its divisors is an integer number (510556101009).

Almost surely, 2^{1021112202017} is an apocalyptic number.

It is an amenable number.

1021112202017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021112202017 is an equidigital number, since it uses as much as digits as its factorization.

1021112202017 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 1021112202017 its reverse (7102022111201), we get a palindrome (8123134313218).

The spelling of 1021112202017 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred two thousand, seventeen".