11109999999999 has 8 divisors (see below), whose sum is σ = 14813366117040. Its totient is φ = 7406650274816.

The previous prime is 11109999999949. The next prime is 11110000000009. The reversal of 11109999999999 is 99999999990111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11109999999999 - 2¹⁹ = 11109999475711 is a prime.

It is a super-9 number, since 9×11109999999999⁹ (a number of 119 digits) contains 999999999 as substring.

11109999999999 is a modest number, since divided by 9999999 gives 1110999 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11109999999949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2418114 + ... + 5297855.

It is an arithmetic number, because the mean of its divisors is an integer number (1851670764630).

Almost surely, 2^{11109999999999} is an apocalyptic number.

11109999999999 is a deficient number, since it is larger than the sum of its proper divisors (3703366117041).

11109999999999 is an equidigital number, since it uses as much as digits as its factorization.

11109999999999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8195929.

The product of its (nonzero) digits is 3486784401, while the sum is 93.

The spelling of 11109999999999 in words is "eleven trillion, one hundred nine billion, nine hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred ninety-nine".