111000080 has 20 divisors (see below), whose sum is σ = 258075372. Its totient is φ = 44400000.

The previous prime is 111000061. The next prime is 111000101. The reversal of 111000080 is 80000111.

It can be written as a sum of positive squares in 2 ways, for example, as 74373376 + 36626704 = 8624^2 + 6052^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 693671 + ... + 693830.

Almost surely, 2^111000080 is an apocalyptic number.

111000080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111000080 is an abundant number, since it is smaller than the sum of its proper divisors (147075292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111000080 is a wasteful number, since it uses less digits than its factorization.

111000080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387514 (or 1387508 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 111000080 is about 10535.6575494840. The cubic root of 111000080 is about 480.5896688275.

Adding to 111000080 its reverse (80000111), we get a palindrome (191000191).

The spelling of 111000080 in words is "one hundred eleven million, eighty", and thus it is an aban number.