1110551111111 has 4 divisors (see below), whose sum is σ = 1195978119672. Its totient is φ = 1025124102552.

The previous prime is 1110551111011. The next prime is 1110551111113. The reversal of 1110551111111 is 1111111550111.

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 1110551111111 - 2¹⁴ = 1110551094727 is a prime.

It is a Duffinian number.

1110551111111 is a modest number, since divided by 1111111 gives 111055 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1110551111113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42713504261 + ... + 42713504286.

It is an arithmetic number, because the mean of its divisors is an integer number (298994529918).

Almost surely, 2^{1110551111111} is an apocalyptic number.

1110551111111 is a deficient number, since it is larger than the sum of its proper divisors (85427008561).

1110551111111 is an equidigital number, since it uses as much as digits as its factorization.

1110551111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85427008560.

The product of its (nonzero) digits is 25, while the sum is 20.

Adding to 1110551111111 its reverse (1111111550111), we get a palindrome (2221662661222).

The spelling of 1110551111111 in words is "one trillion, one hundred ten billion, five hundred fifty-one million, one hundred eleven thousand, one hundred eleven".