111099660 has 288 divisors, whose sum is σ = 397135872. Its totient is φ = 23063040.

The previous prime is 111099647. The next prime is 111099673. The reversal of 111099660 is 66990111.

It is an interprime number because it is at equal distance from previous prime (111099647) and next prime (111099673).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2096194 + ... + 2096246.

It is an arithmetic number, because the mean of its divisors is an integer number (1378944).

Almost surely, 2^111099660 is an apocalyptic number.

111099660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111099660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (198567936).

111099660 is an abundant number, since it is smaller than the sum of its proper divisors (286036212).

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

111099660 is a wasteful number, since it uses less digits than its factorization.

111099660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 33.

The square root of 111099660 is about 10540.3823460062. The cubic root of 111099660 is about 480.7333408417.

The spelling of 111099660 in words is "one hundred eleven million, ninety-nine thousand, six hundred sixty".