10210991722391 has 2 divisors, whose sum is σ = 10210991722392. Its totient is φ = 10210991722390.

The previous prime is 10210991722387. The next prime is 10210991722403. The reversal of 10210991722391 is 19322719901201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10210991722391 - 2² = 10210991722387 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10210991722091) 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, 5105495861195 + 5105495861196.

It is an arithmetic number, because the mean of its divisors is an integer number (5105495861196).

Almost surely, 2^{10210991722391} is an apocalyptic number.

10210991722391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10210991722391 is an equidigital number, since it uses as much as digits as its factorization.

10210991722391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 47.

The spelling of 10210991722391 in words is "ten trillion, two hundred ten billion, nine hundred ninety-one million, seven hundred twenty-two thousand, three hundred ninety-one".