12103111200 has 72 divisors (see below), whose sum is σ = 39395634768. Its totient is φ = 3227495680.

The previous prime is 12103111193. The next prime is 12103111213. The reversal of 12103111200 is 211130121.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2519082 + ... + 2523881.

It is an arithmetic number, because the mean of its divisors is an integer number (547161594).

Almost surely, 2^12103111200 is an apocalyptic number.

12103111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12103111200 is an abundant number, since it is smaller than the sum of its proper divisors (27292523568).

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

12103111200 is a wasteful number, since it uses less digits than its factorization.

12103111200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5042986 (or 5042973 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 12103111200 its reverse (211130121), we get a palindrome (12314241321).

It can be divided in two parts, 121031 and 11200, that added together give a palindrome (132231).

The spelling of 12103111200 in words is "twelve billion, one hundred three million, one hundred eleven thousand, two hundred".