10868825921 has 2 divisors, whose sum is σ = 10868825922. Its totient is φ = 10868825920.

The previous prime is 10868825867. The next prime is 10868825923. The reversal of 10868825921 is 12952886801.

10868825921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9952855696 + 915970225 = 99764^2 + 30265^2 .

It is a cyclic number.

It is not a de Polignac number, because 10868825921 - 2¹⁴ = 10868809537 is a prime.

Together with 10868825923, 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 10868825921.

It is not a weakly prime, because it can be changed into another prime (10868825923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5434412960 + 5434412961.

It is an arithmetic number, because the mean of its divisors is an integer number (5434412961).

Almost surely, 2^10868825921 is an apocalyptic number.

It is an amenable number.

10868825921 is a deficient number, since it is larger than the sum of its proper divisors (1).

10868825921 is an equidigital number, since it uses as much as digits as its factorization.

10868825921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 552960, while the sum is 50.

The spelling of 10868825921 in words is "ten billion, eight hundred sixty-eight million, eight hundred twenty-five thousand, nine hundred twenty-one".