111109998 has 16 divisors (see below), whose sum is σ = 222426576. Its totient is φ = 37002240.

The previous prime is 111109997. The next prime is 111110029. The reversal of 111109998 is 899901111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111109997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113 + ... + 14948.

It is an arithmetic number, because the mean of its divisors is an integer number (13901661).

Almost surely, 2^111109998 is an apocalyptic number.

111109998 is an abundant number, since it is smaller than the sum of its proper divisors (111316578).

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

111109998 is a wasteful number, since it uses less digits than its factorization.

111109998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17219.

The product of its (nonzero) digits is 5832, while the sum is 39.

The square root of 111109998 is about 10540.8727342664. The cubic root of 111109998 is about 480.7482513798.

The spelling of 111109998 in words is "one hundred eleven million, one hundred nine thousand, nine hundred ninety-eight".