1020622552217 has 2 divisors, whose sum is σ = 1020622552218. Its totient is φ = 1020622552216.

The previous prime is 1020622552193. The next prime is 1020622552249. The reversal of 1020622552217 is 7122552260201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1020061620361 + 560931856 = 1009981^2 + 23684^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020622552217 - 2⁶ = 1020622552153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020622552267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510311276108 + 510311276109.

It is an arithmetic number, because the mean of its divisors is an integer number (510311276109).

Almost surely, 2^{1020622552217} is an apocalyptic number.

It is an amenable number.

1020622552217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020622552217 is an equidigital number, since it uses as much as digits as its factorization.

1020622552217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33600, while the sum is 35.

The spelling of 1020622552217 in words is "one trillion, twenty billion, six hundred twenty-two million, five hundred fifty-two thousand, two hundred seventeen".