11100021880 has 16 divisors (see below), whose sum is σ = 24975049320. Its totient is φ = 4440008736.

The previous prime is 11100021853. The next prime is 11100021917. The reversal of 11100021880 is 8812000111.

11100021880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138750234 + ... + 138750313.

Almost surely, 2^11100021880 is an apocalyptic number.

11100021880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100021880 is an abundant number, since it is smaller than the sum of its proper divisors (13875027440).

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

11100021880 is a wasteful number, since it uses less digits than its factorization.

11100021880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277500558 (or 277500554 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 11100021880 its reverse (8812000111), we get a palindrome (19912021991).

The spelling of 11100021880 in words is "eleven billion, one hundred million, twenty-one thousand, eight hundred eighty".