111005511049 has 4 divisors (see below), whose sum is σ = 113712962580. Its totient is φ = 108298059520.

The previous prime is 111005511007. The next prime is 111005511121. The reversal of 111005511049 is 940115500111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 940115500111 = 408337 ⋅2302303.

It can be written as a sum of positive squares in 2 ways, for example, as 24287040649 + 86718470400 = 155843^2 + 294480^2 .

It is a cyclic number.

It is not a de Polignac number, because 111005511049 - 2¹⁷ = 111005379977 is a prime.

It is a super-2 number, since 2×111005511049² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111005514049) 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, 1353725704 + ... + 1353725785.

It is an arithmetic number, because the mean of its divisors is an integer number (28428240645).

Almost surely, 2^111005511049 is an apocalyptic number.

It is an amenable number.

111005511049 is a deficient number, since it is larger than the sum of its proper divisors (2707451531).

111005511049 is an equidigital number, since it uses as much as digits as its factorization.

111005511049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707451530.

The product of its (nonzero) digits is 900, while the sum is 28.

The spelling of 111005511049 in words is "one hundred eleven billion, five million, five hundred eleven thousand, forty-nine".