11100212120 has 16 divisors (see below), whose sum is σ = 24975477360. Its totient is φ = 4440084832.

The previous prime is 11100212087. The next prime is 11100212141. The reversal of 11100212120 is 2121200111.

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 3 ways as a sum of consecutive naturals, for example, 138752612 + ... + 138752691.

It is an arithmetic number, because the mean of its divisors is an integer number (1560967335).

Almost surely, 2^11100212120 is an apocalyptic number.

11100212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100212120 is an abundant number, since it is smaller than the sum of its proper divisors (13875265240).

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

11100212120 is a wasteful number, since it uses less digits than its factorization.

11100212120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277505314 (or 277505310 counting only the distinct ones).

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

Adding to 11100212120 its reverse (2121200111), we get a palindrome (13221412231).

The spelling of 11100212120 in words is "eleven billion, one hundred million, two hundred twelve thousand, one hundred twenty".