11220055120 has 40 divisors (see below), whose sum is σ = 26091080064. Its totient is φ = 4487256192.

The previous prime is 11220055117. The next prime is 11220055129. The reversal of 11220055120 is 2155002211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220055129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812917 + ... + 826603.

Almost surely, 2^11220055120 is an apocalyptic number.

11220055120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220055120 is an abundant number, since it is smaller than the sum of its proper divisors (14871024944).

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

11220055120 is a wasteful number, since it uses less digits than its factorization.

11220055120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23947 (or 23941 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

Adding to 11220055120 its reverse (2155002211), we get a palindrome (13375057331).

The spelling of 11220055120 in words is "eleven billion, two hundred twenty million, fifty-five thousand, one hundred twenty".