11113203220 has 24 divisors (see below), whose sum is σ = 26671688064. Its totient is φ = 3810241056.

The previous prime is 11113203193. The next prime is 11113203239. The reversal of 11113203220 is 2230231111.

It is a junction number, because it is equal to n+sod(n) for n = 11113203194 and 11113203203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39689872 + ... + 39690151.

It is an arithmetic number, because the mean of its divisors is an integer number (1111320336).

Almost surely, 2^11113203220 is an apocalyptic number.

11113203220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11113203220 is an abundant number, since it is smaller than the sum of its proper divisors (15558484844).

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

11113203220 is a wasteful number, since it uses less digits than its factorization.

11113203220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79380039 (or 79380037 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 11113203220 its reverse (2230231111), we get a palindrome (13343434331).

The spelling of 11113203220 in words is "eleven billion, one hundred thirteen million, two hundred three thousand, two hundred twenty".