12081100 has 18 divisors (see below), whose sum is σ = 26216204. Its totient is φ = 4832400.

The previous prime is 12081073. The next prime is 12081119. The reversal of 12081100 is 118021.

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 5 ways as a sum of consecutive naturals, for example, 60306 + ... + 60505.

Almost surely, 2^12081100 is an apocalyptic number.

12081100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12081100 is an abundant number, since it is smaller than the sum of its proper divisors (14135104).

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

12081100 is a wasteful number, since it uses less digits than its factorization.

12081100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120825 (or 120818 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 12081100 is about 3475.7876805121. The cubic root of 12081100 is about 229.4574483283.

Adding to 12081100 its reverse (118021), we get a palindrome (12199121).

The spelling of 12081100 in words is "twelve million, eighty-one thousand, one hundred".