11121999968 has 48 divisors (see below), whose sum is σ = 23279641056. Its totient is φ = 5218836480.

The previous prime is 11121999919. The next prime is 11121999971. The reversal of 11121999968 is 86999912111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103553 + ... + 181568.

It is an arithmetic number, because the mean of its divisors is an integer number (484992522).

Almost surely, 2^11121999968 is an apocalyptic number.

It is an amenable number.

11121999968 is an abundant number, since it is smaller than the sum of its proper divisors (12157641088).

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

11121999968 is a wasteful number, since it uses less digits than its factorization.

11121999968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285207 (or 285199 counting only the distinct ones).

The product of its digits is 629856, while the sum is 56.

The spelling of 11121999968 in words is "eleven billion, one hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred sixty-eight".