1011220212017 has 2 divisors, whose sum is σ = 1011220212018. Its totient is φ = 1011220212016.

The previous prime is 1011220211971. The next prime is 1011220212019. The reversal of 1011220212017 is 7102120221101.

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., 599523455521 + 411696756496 = 774289^2 + 641636^2 .

It is an emirp because it is prime and its reverse (7102120221101) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1011220212017 - 2³⁴ = 994040342833 is a prime.

Together with 1011220212019, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1011220212017.

It is not a weakly prime, because it can be changed into another prime (1011220212019) 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, 505610106008 + 505610106009.

It is an arithmetic number, because the mean of its divisors is an integer number (505610106009).

Almost surely, 2^{1011220212017} is an apocalyptic number.

It is an amenable number.

1011220212017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011220212017 is an equidigital number, since it uses as much as digits as its factorization.

1011220212017 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 1011220212017 its reverse (7102120221101), we get a palindrome (8113340433118).

The spelling of 1011220212017 in words is "one trillion, eleven billion, two hundred twenty million, two hundred twelve thousand, seventeen".