11001320100 has 144 divisors (see below), whose sum is σ = 35402942400. Its totient is φ = 2930722560.

The previous prime is 11001320063. The next prime is 11001320107. The reversal of 11001320100 is 102310011.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11001320107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4472671 + ... + 4475129.

Almost surely, 2^11001320100 is an apocalyptic number.

11001320100 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 11001320100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17701471200).

11001320100 is an abundant number, since it is smaller than the sum of its proper divisors (24401622300).

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

11001320100 is a wasteful number, since it uses less digits than its factorization.

11001320100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4139 (or 4126 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 11001320100 its reverse (102310011), we get a palindrome (11103630111).

The spelling of 11001320100 in words is "eleven billion, one million, three hundred twenty thousand, one hundred".