10221206807797 has 2 divisors, whose sum is σ = 10221206807798. Its totient is φ = 10221206807796.

The previous prime is 10221206807767. The next prime is 10221206807813. The reversal of 10221206807797 is 79770860212201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5295710140081 + 4925496667716 = 2301241^2 + 2219346^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221206807797 - 2¹⁵ = 10221206775029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221206807767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110603403898 + 5110603403899.

It is an arithmetic number, because the mean of its divisors is an integer number (5110603403899).

Almost surely, 2^{10221206807797} is an apocalyptic number.

It is an amenable number.

10221206807797 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221206807797 is an equidigital number, since it uses as much as digits as its factorization.

10221206807797 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The spelling of 10221206807797 in words is "ten trillion, two hundred twenty-one billion, two hundred six million, eight hundred seven thousand, seven hundred ninety-seven".