11000010100991 has 2 divisors, whose sum is σ = 11000010100992. Its totient is φ = 11000010100990.

The previous prime is 11000010100979. The next prime is 11000010101009. The reversal of 11000010100991 is 19900101000011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11000010100991 - 2⁶ = 11000010100927 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11000010100921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500005050495 + 5500005050496.

It is an arithmetic number, because the mean of its divisors is an integer number (5500005050496).

Almost surely, 2^{11000010100991} is an apocalyptic number.

11000010100991 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000010100991 is an equidigital number, since it uses as much as digits as its factorization.

11000010100991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 23.

The spelling of 11000010100991 in words is "eleven trillion, ten million, one hundred thousand, nine hundred ninety-one".