111199679052 has 144 divisors (see below), whose sum is σ = 326935262976. Its totient is φ = 28794902400.

The previous prime is 111199679029. The next prime is 111199679117. The reversal of 111199679052 is 250976991111.

It is a junction number, because it is equal to n+sod(n) for n = 111199678986 and 111199679004.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3347758 + ... + 3380810.

Almost surely, 2^111199679052 is an apocalyptic number.

111199679052 is a gapful number since it is divisible by the number (12) 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 111199679052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163467631488).

111199679052 is an abundant number, since it is smaller than the sum of its proper divisors (215735583924).

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

111199679052 is a wasteful number, since it uses less digits than its factorization.

111199679052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33420 (or 33407 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 51.

The spelling of 111199679052 in words is "one hundred eleven billion, one hundred ninety-nine million, six hundred seventy-nine thousand, fifty-two".