1111100011111 has 16 divisors (see below), whose sum is σ = 1209600217728. Its totient is φ = 1016470425600.

The previous prime is 1111100011103. The next prime is 1111100011117.

It is a happy number.

1111100011111 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1111100011111 - 2³ = 1111100011103 is a prime.

1111100011111 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111100011117) 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 15 ways as a sum of consecutive naturals, for example, 2752290 + ... + 3130063.

It is an arithmetic number, because the mean of its divisors is an integer number (75600013608).

Almost surely, 2^{1111100011111} is an apocalyptic number.

1111100011111 is a deficient number, since it is larger than the sum of its proper divisors (98500206617).

1111100011111 is a wasteful number, since it uses less digits than its factorization.

1111100011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5882682.

The product of its (nonzero) digits is 1, while the sum is 10.

It can be divided in two parts, 11111000 and 11111, that added together give a palindrome (11122111).

The spelling of 1111100011111 in words is "one trillion, one hundred eleven billion, one hundred million, eleven thousand, one hundred eleven".