10010209991 has 2 divisors, whose sum is σ = 10010209992. Its totient is φ = 10010209990.

The previous prime is 10010209987. The next prime is 10010209997. The reversal of 10010209991 is 19990201001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10010209991 - 2² = 10010209987 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10010209997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005104995 + 5005104996.

It is an arithmetic number, because the mean of its divisors is an integer number (5005104996).

Almost surely, 2^10010209991 is an apocalyptic number.

10010209991 is a deficient number, since it is larger than the sum of its proper divisors (1).

10010209991 is an equidigital number, since it uses as much as digits as its factorization.

10010209991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 32.

The spelling of 10010209991 in words is "ten billion, ten million, two hundred nine thousand, nine hundred ninety-one".