1100109999979 has 4 divisors (see below), whose sum is σ = 1126941951240. Its totient is φ = 1073278048720.

The previous prime is 1100109999869. The next prime is 1100110000001. The reversal of 1100109999979 is 9799999010011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100109999979 - 2¹⁹ = 1100109475691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1100109999979.

It is not an unprimeable number, because it can be changed into a prime (1100109999679) 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 in 3 ways as a sum of consecutive naturals, for example, 13415975569 + ... + 13415975650.

It is an arithmetic number, because the mean of its divisors is an integer number (281735487810).

Almost surely, 2^{1100109999979} is an apocalyptic number.

1100109999979 is a deficient number, since it is larger than the sum of its proper divisors (26831951261).

1100109999979 is an equidigital number, since it uses as much as digits as its factorization.

1100109999979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26831951260.

The product of its (nonzero) digits is 3720087, while the sum is 64.

The spelling of 1100109999979 in words is "one trillion, one hundred billion, one hundred nine million, nine hundred ninety-nine thousand, nine hundred seventy-nine".