11121100000 has 72 divisors (see below), whose sum is σ = 27366826536. Its totient is φ = 4448400000.

The previous prime is 11121099923. The next prime is 11121100009. The reversal of 11121100000 is 112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121100009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44395 + ... + 155605.

It is an arithmetic number, because the mean of its divisors is an integer number (380094813).

Almost surely, 2^11121100000 is an apocalyptic number.

11121100000 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 11121100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13683413268).

11121100000 is an abundant number, since it is smaller than the sum of its proper divisors (16245726536).

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

11121100000 is an frugal number, since it uses more digits than its factorization.

11121100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111246 (or 111218 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 11121100000 its reverse (112111), we get a palindrome (11121212111).

The spelling of 11121100000 in words is "eleven billion, one hundred twenty-one million, one hundred thousand".