44231221 has 4 divisors (see below), whose sum is σ = 46559200. Its totient is φ = 41903244.

The previous prime is 44231197. The next prime is 44231227. The reversal of 44231221 is 12213244.

44231221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 44231221 - 2¹⁷ = 44100149 is a prime.

It is a super-2 number, since 2×44231221² = 3912801822301682, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 2327959 = 44231221 / (4 + 4 + 2 + 3 + 1 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44231227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1163961 + ... + 1163998.

It is an arithmetic number, because the mean of its divisors is an integer number (11639800).

Almost surely, 2^44231221 is an apocalyptic number.

It is an amenable number.

44231221 is a deficient number, since it is larger than the sum of its proper divisors (2327979).

44231221 is a wasteful number, since it uses less digits than its factorization.

44231221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327978.

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

The square root of 44231221 is about 6650.6556819610. The cubic root of 44231221 is about 353.6521554697.

Adding to 44231221 its reverse (12213244), we get a palindrome (56444465).

The spelling of 44231221 in words is "forty-four million, two hundred thirty-one thousand, two hundred twenty-one".