111081018 has 16 divisors (see below), whose sum is σ = 222267456. Its totient is φ = 37009440.

The previous prime is 111081017. The next prime is 111081037. The reversal of 111081018 is 810180111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111080985 and 111081003.

It is not an unprimeable number, because it can be changed into a prime (111081017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18430 + ... + 23702.

It is an arithmetic number, because the mean of its divisors is an integer number (13891716).

Almost surely, 2^111081018 is an apocalyptic number.

111081018 is an abundant number, since it is smaller than the sum of its proper divisors (111186438).

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

111081018 is a wasteful number, since it uses less digits than its factorization.

111081018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8789.

The product of its (nonzero) digits is 64, while the sum is 21.

The square root of 111081018 is about 10539.4979956353. The cubic root of 111081018 is about 480.7064510737.

It can be divided in two parts, 1110 and 81018, that added together give a palindrome (82128).

The spelling of 111081018 in words is "one hundred eleven million, eighty-one thousand, eighteen".