1100120009988 has 192 divisors, whose sum is σ = 2789493977088. Its totient is φ = 336183644160.

The previous prime is 1100120009987. The next prime is 1100120010037. The reversal of 1100120009988 is 8899000210011.

It is not an unprimeable number, because it can be changed into a prime (1100120009987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1174087056 + ... + 1174087992.

It is an arithmetic number, because the mean of its divisors is an integer number (14528614464).

Almost surely, 2^{1100120009988} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100120009988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394746988544).

1100120009988 is an abundant number, since it is smaller than the sum of its proper divisors (1689373967100).

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

1100120009988 is a wasteful number, since it uses less digits than its factorization.

1100120009988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922 (or 1920 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 39.

Adding to 1100120009988 its reverse (8899000210011), we get a palindrome (9999120219999).

The spelling of 1100120009988 in words is "one trillion, one hundred billion, one hundred twenty million, nine thousand, nine hundred eighty-eight".