11021217180 has 24 divisors (see below), whose sum is σ = 30859408272. Its totient is φ = 2938991232.

The previous prime is 11021217173. The next prime is 11021217191. The reversal of 11021217180 is 8171212011.

11021217180 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 11021217180.

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 7 ways as a sum of consecutive naturals, for example, 91843417 + ... + 91843536.

It is an arithmetic number, because the mean of its divisors is an integer number (1285808678).

Almost surely, 2^11021217180 is an apocalyptic number.

11021217180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11021217180 is an abundant number, since it is smaller than the sum of its proper divisors (19838191092).

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

11021217180 is a wasteful number, since it uses less digits than its factorization.

11021217180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183686965 (or 183686963 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 24.

Adding to 11021217180 its reverse (8171212011), we get a palindrome (19192429191).

The spelling of 11021217180 in words is "eleven billion, twenty-one million, two hundred seventeen thousand, one hundred eighty".