11121100220 has 24 divisors (see below), whose sum is σ = 23441140800. Its totient is φ = 4431900992.

The previous prime is 11121100219. The next prime is 11121100229. The reversal of 11121100220 is 2200112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121100229) 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 7 ways as a sum of consecutive naturals, for example, 1028180 + ... + 1038939.

It is an arithmetic number, because the mean of its divisors is an integer number (976714200).

Almost surely, 2^11121100220 is an apocalyptic number.

11121100220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11121100220 is an abundant number, since it is smaller than the sum of its proper divisors (12320040580).

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

11121100220 is a wasteful number, since it uses less digits than its factorization.

11121100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2067397 (or 2067395 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 11121100220 its reverse (2200112111), we get a palindrome (13321212331).

The spelling of 11121100220 in words is "eleven billion, one hundred twenty-one million, one hundred thousand, two hundred twenty".