12244044220 has 72 divisors (see below), whose sum is σ = 27418338864. Its totient is φ = 4591752192.

The previous prime is 12244044203. The next prime is 12244044233. The reversal of 12244044220 is 2244044221.

It is a super-2 number, since 2×12244044220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691599 + ... + 709081.

It is an arithmetic number, because the mean of its divisors is an integer number (380810262).

Almost surely, 2^12244044220 is an apocalyptic number.

12244044220 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 12244044220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13709169432).

12244044220 is an abundant number, since it is smaller than the sum of its proper divisors (15174294644).

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

12244044220 is a wasteful number, since it uses less digits than its factorization.

12244044220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17627 (or 17606 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 12244044220 its reverse (2244044221), we get a palindrome (14488088441).

Subtracting from 12244044220 its reverse (2244044221), we obtain a palindrome (9999999999).

The spelling of 12244044220 in words is "twelve billion, two hundred forty-four million, forty-four thousand, two hundred twenty".