1001111109499 has 2 divisors, whose sum is σ = 1001111109500. Its totient is φ = 1001111109498.

The previous prime is 1001111109497. The next prime is 1001111109503. The reversal of 1001111109499 is 9949011111001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001111109499 - 2¹ = 1001111109497 is a prime.

Together with 1001111109497, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1001111109497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555554749 + 500555554750.

It is an arithmetic number, because the mean of its divisors is an integer number (500555554750).

Almost surely, 2^{1001111109499} is an apocalyptic number.

1001111109499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111109499 is an equidigital number, since it uses as much as digits as its factorization.

1001111109499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 37.

The spelling of 1001111109499 in words is "one trillion, one billion, one hundred eleven million, one hundred nine thousand, four hundred ninety-nine".