12103204400 has 180 divisors, whose sum is σ = 35304110928. Its totient is φ = 3905310720.

The previous prime is 12103204397. The next prime is 12103204423. The reversal of 12103204400 is 440230121.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 801722 + ... + 816678.

Almost surely, 2^12103204400 is an apocalyptic number.

12103204400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12103204400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17652055464).

12103204400 is an abundant number, since it is smaller than the sum of its proper divisors (23200906528).

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

12103204400 is a wasteful number, since it uses less digits than its factorization.

12103204400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15016 (or 14988 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 12103204400 its reverse (440230121), we get a palindrome (12543434521).

The spelling of 12103204400 in words is "twelve billion, one hundred three million, two hundred four thousand, four hundred".