12103001100 has 72 divisors (see below), whose sum is σ = 38908915920. Its totient is φ = 3227466240.

The previous prime is 12103001093. The next prime is 12103001101. The reversal of 12103001100 is 110030121.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (12103001101) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2238597 + ... + 2243996.

It is an arithmetic number, because the mean of its divisors is an integer number (540401610).

Almost surely, 2^12103001100 is an apocalyptic number.

12103001100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103001100 is an abundant number, since it is smaller than the sum of its proper divisors (26805914820).

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

12103001100 is a wasteful number, since it uses less digits than its factorization.

12103001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482616 (or 4482603 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 12103001100 its reverse (110030121), we get a palindrome (12213031221).

The spelling of 12103001100 in words is "twelve billion, one hundred three million, one thousand, one hundred".