11103321000 has 128 divisors (see below), whose sum is σ = 34723728000. Its totient is φ = 2953932800.

The previous prime is 11103320989. The next prime is 11103321007. The reversal of 11103321000 is 12330111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (11103321007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1342879 + ... + 1351121.

It is an arithmetic number, because the mean of its divisors is an integer number (271279125).

Almost surely, 2^11103321000 is an apocalyptic number.

11103321000 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 11103321000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17361864000).

11103321000 is an abundant number, since it is smaller than the sum of its proper divisors (23620407000).

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

11103321000 is a wasteful number, since it uses less digits than its factorization.

11103321000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8716 (or 8702 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 12.

Adding to 11103321000 its reverse (12330111), we get a palindrome (11115651111).

The spelling of 11103321000 in words is "eleven billion, one hundred three million, three hundred twenty-one thousand".