10221197806717 has 2 divisors, whose sum is σ = 10221197806718. Its totient is φ = 10221197806716.

The previous prime is 10221197806709. The next prime is 10221197806759. The reversal of 10221197806717 is 71760879112201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5781807802521 + 4439390004196 = 2404539^2 + 2106986^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221197806717 - 2³ = 10221197806709 is a prime.

It is a super-2 number, since 2×10221197806717² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221197806117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110598903358 + 5110598903359.

It is an arithmetic number, because the mean of its divisors is an integer number (5110598903359).

Almost surely, 2^{10221197806717} is an apocalyptic number.

It is an amenable number.

10221197806717 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221197806717 is an equidigital number, since it uses as much as digits as its factorization.

10221197806717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 52.

The spelling of 10221197806717 in words is "ten trillion, two hundred twenty-one billion, one hundred ninety-seven million, eight hundred six thousand, seven hundred seventeen".