44123221 has 4 divisors (see below), whose sum is σ = 44419500. Its totient is φ = 43826944.

The previous prime is 44123201. The next prime is 44123231. The reversal of 44123221 is 12232144.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2842596 + 41280625 = 1686^2 + 6425^2 .

It is a cyclic number.

It is not a de Polignac number, because 44123221 - 2⁹ = 44122709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44123201) 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, 147916 + ... + 148213.

It is an arithmetic number, because the mean of its divisors is an integer number (11104875).

Almost surely, 2^44123221 is an apocalyptic number.

It is an amenable number.

44123221 is a deficient number, since it is larger than the sum of its proper divisors (296279).

44123221 is a wasteful number, since it uses less digits than its factorization.

44123221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296278.

The product of its digits is 384, while the sum is 19.

The square root of 44123221 is about 6642.5312193470. The cubic root of 44123221 is about 353.3640817155.

Adding to 44123221 its reverse (12232144), we get a palindrome (56355365).

It can be divided in two parts, 44123 and 221, that added together give a palindrome (44344).

The spelling of 44123221 in words is "forty-four million, one hundred twenty-three thousand, two hundred twenty-one".