111999960000 has 210 divisors, whose sum is σ = 401157457272. Its totient is φ = 29866560000.

The previous prime is 111999959999. The next prime is 111999960073. The reversal of 111999960000 is 69999111.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 204445 + ... + 515555.

Almost surely, 2^111999960000 is an apocalyptic number.

111999960000 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 111999960000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200578728636).

111999960000 is an abundant number, since it is smaller than the sum of its proper divisors (289157497272).

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

111999960000 is an equidigital number, since it uses as much as digits as its factorization.

111999960000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311149 (or 311121 counting only the distinct ones).

The product of its (nonzero) digits is 39366, while the sum is 45.

The spelling of 111999960000 in words is "one hundred eleven billion, nine hundred ninety-nine million, nine hundred sixty thousand".