1111100000 has 144 divisors (see below), whose sum is σ = 2811195072. Its totient is φ = 432000000.

The previous prime is 1111099981. The next prime is 1111100021. The reversal of 1111100000 is 11111.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a nialpdrome in base 10.

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 23 ways as a sum of consecutive naturals, for example, 4099865 + ... + 4100135.

It is an arithmetic number, because the mean of its divisors is an integer number (19522188).

Almost surely, 2^1111100000 is an apocalyptic number.

1111100000 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 1111100000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1405597536).

1111100000 is an abundant number, since it is smaller than the sum of its proper divisors (1700095072).

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

1111100000 is an frugal number, since it uses more digits than its factorization.

1111100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347 (or 319 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 5.

The square root of 1111100000 is about 33333.1666662500. The cubic root of 1111100000 is about 1035.7407161592.

Adding to 1111100000 its reverse (11111), we get a palindrome (1111111111).

Subtracting from 1111100000 its reverse (11111), we obtain a square (1111088889 = 33333²).

1111100000 divided by its reverse (11111) gives a 5-th power (100000 = 10⁵).

The spelling of 1111100000 in words is "one billion, one hundred eleven million, one hundred thousand".