12224122920 has 192 divisors, whose sum is σ = 41508838800. Its totient is φ = 3115929600.

The previous prime is 12224122909. The next prime is 12224122921. The reversal of 12224122920 is 2922142221.

12224122920 is a `hidden beast` number, since 1 + 222 + 412 + 2 + 9 + 20 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 11353754916 + 870368004 = 106554^2 + 29502^2 .

It is not an unprimeable number, because it can be changed into a prime (12224122921) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1048644 + ... + 1060236.

Almost surely, 2^12224122920 is an apocalyptic number.

12224122920 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 12224122920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20754419400).

12224122920 is an abundant number, since it is smaller than the sum of its proper divisors (29284715880).

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

12224122920 is a wasteful number, since it uses less digits than its factorization.

12224122920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11740 (or 11733 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

It can be divided in two parts, 122241 and 22920, that added together give a square (145161 = 381²).

The spelling of 12224122920 in words is "twelve billion, two hundred twenty-four million, one hundred twenty-two thousand, nine hundred twenty".