11201100020 has 96 divisors (see below), whose sum is σ = 27046051200. Its totient is φ = 3853785600.

The previous prime is 11201100007. The next prime is 11201100047. The reversal of 11201100020 is 2000110211.

It is a junction number, because it is equal to n+sod(n) for n = 11201099980 and 11201100007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4935446 + ... + 4937714.

It is an arithmetic number, because the mean of its divisors is an integer number (281729700).

Almost surely, 2^11201100020 is an apocalyptic number.

11201100020 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 11201100020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13523025600).

11201100020 is an abundant number, since it is smaller than the sum of its proper divisors (15844951180).

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

11201100020 is a wasteful number, since it uses less digits than its factorization.

11201100020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3489 (or 3487 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 11201100020 its reverse (2000110211), we get a palindrome (13201210231).

The spelling of 11201100020 in words is "eleven billion, two hundred one million, one hundred thousand, twenty".