11200220020 has 96 divisors (see below), whose sum is σ = 26551074816. Its totient is φ = 3931804800.

The previous prime is 11200219999. The next prime is 11200220033. The reversal of 11200220020 is 2002200211.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11200219979 and 11200220006.

It is a congruent number.

It is an unprimeable number.

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, 3155887 + ... + 3159433.

It is an arithmetic number, because the mean of its divisors is an integer number (276573696).

Almost surely, 2^11200220020 is an apocalyptic number.

11200220020 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 11200220020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13275537408).

11200220020 is an abundant number, since it is smaller than the sum of its proper divisors (15350854796).

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

11200220020 is a wasteful number, since it uses less digits than its factorization.

11200220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061 (or 4059 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 11200220020 its reverse (2002200211), we get a palindrome (13202420231).

It can be divided in two parts, 1 and 1200220020, that added together give a palindrome (1200220021).

The spelling of 11200220020 in words is "eleven billion, two hundred million, two hundred twenty thousand, twenty".