10211891161 has 2 divisors, whose sum is σ = 10211891162. Its totient is φ = 10211891160.

The previous prime is 10211891153. The next prime is 10211891243. The reversal of 10211891161 is 16119811201.

10211891161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9812091136 + 399800025 = 99056^2 + 19995^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211891161 - 2³ = 10211891153 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211891101) 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, 5105945580 + 5105945581.

It is an arithmetic number, because the mean of its divisors is an integer number (5105945581).

Almost surely, 2^10211891161 is an apocalyptic number.

It is an amenable number.

10211891161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211891161 is an equidigital number, since it uses as much as digits as its factorization.

10211891161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 31.

The spelling of 10211891161 in words is "ten billion, two hundred eleven million, eight hundred ninety-one thousand, one hundred sixty-one".