12103221200 has 120 divisors (see below), whose sum is σ = 33330432192. Its totient is φ = 4137384960.

The previous prime is 12103221167. The next prime is 12103221203. The reversal of 12103221200 is 212230121.

It is a happy number.

It is a super-2 number, since 2×12103221200² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12103221203) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 965372 + ... + 977828.

Almost surely, 2^12103221200 is an apocalyptic number.

12103221200 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 12103221200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16665216096).

12103221200 is an abundant number, since it is smaller than the sum of its proper divisors (21227210992).

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

12103221200 is a wasteful number, since it uses less digits than its factorization.

12103221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12829 (or 12818 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 12103221200 its reverse (212230121), we get a palindrome (12315451321).

The spelling of 12103221200 in words is "twelve billion, one hundred three million, two hundred twenty-one thousand, two hundred".