12221440124320 has 48 divisors (see below), whose sum is σ = 32997888338688. Its totient is φ = 4190208042240.

The previous prime is 12221440124281. The next prime is 12221440124323. The reversal of 12221440124320 is 2342104412221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12221440124323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5455998936 + ... + 5456001175.

It is an arithmetic number, because the mean of its divisors is an integer number (687456007056).

Almost surely, 2^{12221440124320} is an apocalyptic number.

12221440124320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221440124320 is an abundant number, since it is smaller than the sum of its proper divisors (20776448214368).

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

12221440124320 is a wasteful number, since it uses less digits than its factorization.

12221440124320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10912000133 (or 10912000125 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 12221440124320 its reverse (2342104412221), we get a palindrome (14563544536541).

The spelling of 12221440124320 in words is "twelve trillion, two hundred twenty-one billion, four hundred forty million, one hundred twenty-four thousand, three hundred twenty".