44121222 has 48 divisors (see below), whose sum is σ = 105636960. Its totient is φ = 13238016.

The previous prime is 44121167. The next prime is 44121227. The reversal of 44121222 is 22212144.

44121222 is a `hidden beast` number, since 441 + 2 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 44121195 and 44121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44121227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3904 + ... + 10172.

It is an arithmetic number, because the mean of its divisors is an integer number (2200770).

Almost surely, 2^44121222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44121222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52818480).

44121222 is an abundant number, since it is smaller than the sum of its proper divisors (61515738).

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

44121222 is a wasteful number, since it uses less digits than its factorization.

44121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317 (or 6314 counting only the distinct ones).

The product of its digits is 256, while the sum is 18.

The square root of 44121222 is about 6642.3807478945. The cubic root of 44121222 is about 353.3587452551.

Adding to 44121222 its reverse (22212144), we get a palindrome (66333366).

The spelling of 44121222 in words is "forty-four million, one hundred twenty-one thousand, two hundred twenty-two".