12221241344 has 48 divisors (see below), whose sum is σ = 26316304560. Its totient is φ = 5640560640.

The previous prime is 12221241301. The next prime is 12221241349. The reversal of 12221241344 is 44314212221.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221241349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202892 + ... + 256139.

It is an arithmetic number, because the mean of its divisors is an integer number (548256345).

Almost surely, 2^12221241344 is an apocalyptic number.

It is an amenable number.

12221241344 is an abundant number, since it is smaller than the sum of its proper divisors (14095063216).

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

12221241344 is an equidigital number, since it uses as much as digits as its factorization.

12221241344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459066 (or 459046 counting only the distinct ones).

The product of its digits is 3072, while the sum is 26.

Adding to 12221241344 its reverse (44314212221), we get a palindrome (56535453565).

The spelling of 12221241344 in words is "twelve billion, two hundred twenty-one million, two hundred forty-one thousand, three hundred forty-four".