1222011021017 has 2 divisors, whose sum is σ = 1222011021018. Its totient is φ = 1222011021016.

The previous prime is 1222011020987. The next prime is 1222011021019. The reversal of 1222011021017 is 7101201102221.

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., 1222006437136 + 4583881 = 1105444^2 + 2141^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222011021017 - 2²⁴ = 1221994243801 is a prime.

Together with 1222011021019, 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 1222011021017.

It is not a weakly prime, because it can be changed into another prime (1222011021019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611005510508 + 611005510509.

It is an arithmetic number, because the mean of its divisors is an integer number (611005510509).

Almost surely, 2^{1222011021017} is an apocalyptic number.

It is an amenable number.

1222011021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222011021017 is an equidigital number, since it uses as much as digits as its factorization.

1222011021017 is an evil number, because the sum of its binary digits is even.

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

Adding to 1222011021017 its reverse (7101201102221), we get a palindrome (8323212123238).

The spelling of 1222011021017 in words is "one trillion, two hundred twenty-two billion, eleven million, twenty-one thousand, seventeen".