12222143500 has 144 divisors (see below), whose sum is σ = 31139428320. Its totient is φ = 4178563200.

The previous prime is 12222143497. The next prime is 12222143519. The reversal of 12222143500 is 534122221.

It is a happy number.

12222143500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16145122 + ... + 16145878.

It is an arithmetic number, because the mean of its divisors is an integer number (216246030).

Almost surely, 2^12222143500 is an apocalyptic number.

12222143500 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 12222143500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15569714160).

12222143500 is an abundant number, since it is smaller than the sum of its proper divisors (18917284820).

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

12222143500 is a wasteful number, since it uses less digits than its factorization.

12222143500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1449 (or 1430 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

Adding to 12222143500 its reverse (534122221), we get a palindrome (12756265721).

The spelling of 12222143500 in words is "twelve billion, two hundred twenty-two million, one hundred forty-three thousand, five hundred".