10211521887191 has 2 divisors, whose sum is σ = 10211521887192. Its totient is φ = 10211521887190.

The previous prime is 10211521887187. The next prime is 10211521887199. The reversal of 10211521887191 is 19178812511201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10211521887191 - 2² = 10211521887187 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211521887199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105760943595 + 5105760943596.

It is an arithmetic number, because the mean of its divisors is an integer number (5105760943596).

Almost surely, 2^{10211521887191} is an apocalyptic number.

10211521887191 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211521887191 is an equidigital number, since it uses as much as digits as its factorization.

10211521887191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 47.

The spelling of 10211521887191 in words is "ten trillion, two hundred eleven billion, five hundred twenty-one million, eight hundred eighty-seven thousand, one hundred ninety-one".