12224432920 has 128 divisors (see below), whose sum is σ = 31722969600. Its totient is φ = 4152960000.

The previous prime is 12224432917. The next prime is 12224432921. The reversal of 12224432920 is 2923442221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12224432921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19748371 + ... + 19748989.

It is an arithmetic number, because the mean of its divisors is an integer number (247835700).

Almost surely, 2^12224432920 is an apocalyptic number.

12224432920 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 12224432920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15861484800).

12224432920 is an abundant number, since it is smaller than the sum of its proper divisors (19498536680).

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

12224432920 is a wasteful number, since it uses less digits than its factorization.

12224432920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1169 (or 1165 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 12224432920 in words is "twelve billion, two hundred twenty-four million, four hundred thirty-two thousand, nine hundred twenty".