9910520886121 has 2 divisors, whose sum is σ = 9910520886122. Its totient is φ = 9910520886120.

The previous prime is 9910520886053. The next prime is 9910520886157. The reversal of 9910520886121 is 1216880250199.

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., 6704272526121 + 3206248360000 = 2589261^2 + 1790600^2 .

It is an emirp because it is prime and its reverse (1216880250199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9910520886121 - 2²³ = 9910512497513 is a prime.

It is not a weakly prime, because it can be changed into another prime (9910520886521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4955260443060 + 4955260443061.

It is an arithmetic number, because the mean of its divisors is an integer number (4955260443061).

Almost surely, 2^{9910520886121} is an apocalyptic number.

It is an amenable number.

9910520886121 is a deficient number, since it is larger than the sum of its proper divisors (1).

9910520886121 is an equidigital number, since it uses as much as digits as its factorization.

9910520886121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 52.

The spelling of 9910520886121 in words is "nine trillion, nine hundred ten billion, five hundred twenty million, eight hundred eighty-six thousand, one hundred twenty-one".