12221324044 has 24 divisors (see below), whose sum is σ = 21652203888. Its totient is φ = 6035029440.

The previous prime is 12221324009. The next prime is 12221324053. The reversal of 12221324044 is 44042312221.

It is a super-2 number, since 2×12221324044² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1743154 + ... + 1750150.

It is an arithmetic number, because the mean of its divisors is an integer number (902175162).

Almost surely, 2^12221324044 is an apocalyptic number.

It is an amenable number.

12221324044 is a deficient number, since it is larger than the sum of its proper divisors (9430879844).

12221324044 is a wasteful number, since it uses less digits than its factorization.

12221324044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12345 (or 12343 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 12221324044 its reverse (44042312221), we get a palindrome (56263636265).

The spelling of 12221324044 in words is "twelve billion, two hundred twenty-one million, three hundred twenty-four thousand, forty-four".