11111001100000 has 288 divisors, whose sum is σ = 29075351995872. Its totient is φ = 4164864000000.

The previous prime is 11111001099973. The next prime is 11111001100057. The reversal of 11111001100000 is 110011111.

It is a happy number.

It is a zygodrome in base 10.

It is a congruent number.

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, 396085975 + ... + 396114025.

It is an arithmetic number, because the mean of its divisors is an integer number (100956083319).

Almost surely, 2^{11111001100000} is an apocalyptic number.

11111001100000 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 11111001100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14537675997936).

11111001100000 is an abundant number, since it is smaller than the sum of its proper divisors (17964350895872).

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

11111001100000 is an equidigital number, since it uses as much as digits as its factorization.

11111001100000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28336 (or 28308 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 11111001100000 its reverse (110011111), we get a palindrome (11111111111111).

The spelling of 11111001100000 in words is "eleven trillion, one hundred eleven billion, one million, one hundred thousand".