1105551111111 has 8 divisors (see below), whose sum is σ = 1477224612864. Its totient is φ = 735455841720.

The previous prime is 1105551111089. The next prime is 1105551111113. The reversal of 1105551111111 is 1111111555011.

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

It is not a de Polignac number, because 1105551111111 - 2²⁵ = 1105517556679 is a prime.

1105551111111 is a modest number, since divided by 1111111 gives 110555 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1105551111113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 394556455 + ... + 394559256.

It is an arithmetic number, because the mean of its divisors is an integer number (184653076608).

Almost surely, 2^{1105551111111} is an apocalyptic number.

1105551111111 is a deficient number, since it is larger than the sum of its proper divisors (371673501753).

1105551111111 is an equidigital number, since it uses as much as digits as its factorization.

1105551111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789116181.

The product of its (nonzero) digits is 125, while the sum is 24.

Adding to 1105551111111 its reverse (1111111555011), we get a palindrome (2216662666122).

The spelling of 1105551111111 in words is "one trillion, one hundred five billion, five hundred fifty-one million, one hundred eleven thousand, one hundred eleven".