1220211120017 has 2 divisors, whose sum is σ = 1220211120018. Its totient is φ = 1220211120016.

The previous prime is 1220211119923. The next prime is 1220211120047. The reversal of 1220211120017 is 7100211120221.

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., 1179658826641 + 40552293376 = 1086121^2 + 201376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220211120017 - 2³² = 1215916152721 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220211120047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610105560008 + 610105560009.

It is an arithmetic number, because the mean of its divisors is an integer number (610105560009).

Almost surely, 2^{1220211120017} is an apocalyptic number.

It is an amenable number.

1220211120017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220211120017 is an equidigital number, since it uses as much as digits as its factorization.

1220211120017 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 1220211120017 its reverse (7100211120221), we get a palindrome (8320422240238).

The spelling of 1220211120017 in words is "one trillion, two hundred twenty billion, two hundred eleven million, one hundred twenty thousand, seventeen".