12105004200 has 48 divisors (see below), whose sum is σ = 37525514880. Its totient is φ = 3228000960.

The previous prime is 12105004193. The next prime is 12105004229. The reversal of 12105004200 is 240050121.

It is a super-2 number, since 2×12105004200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12105004200.

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, 10086904 + ... + 10088103.

It is an arithmetic number, because the mean of its divisors is an integer number (781781560).

Almost surely, 2^12105004200 is an apocalyptic number.

12105004200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12105004200 is an abundant number, since it is smaller than the sum of its proper divisors (25420510680).

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

12105004200 is a wasteful number, since it uses less digits than its factorization.

12105004200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20175026 (or 20175017 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 12105004200 its reverse (240050121), we get a palindrome (12345054321).

The spelling of 12105004200 in words is "twelve billion, one hundred five million, four thousand, two hundred".