12221139200 has 108 divisors (see below), whose sum is σ = 30293061120. Its totient is φ = 4881377280.

The previous prime is 12221139199. The next prime is 12221139251. The reversal of 12221139200 is 293112221.

It is a happy number.

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, 8492081 + ... + 8493519.

Almost surely, 2^12221139200 is an apocalyptic number.

12221139200 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 12221139200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15146530560).

12221139200 is an abundant number, since it is smaller than the sum of its proper divisors (18071921920).

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

12221139200 is a wasteful number, since it uses less digits than its factorization.

12221139200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792 (or 2773 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 12221139200 in words is "twelve billion, two hundred twenty-one million, one hundred thirty-nine thousand, two hundred".