44441431221 has 16 divisors (see below), whose sum is σ = 65552537088. Its totient is φ = 26554844400.

The previous prime is 44441431207. The next prime is 44441431241. The reversal of 44441431221 is 12213414444.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-44441431221 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44441431241) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 9481531 + ... + 9486216.

It is an arithmetic number, because the mean of its divisors is an integer number (4097033568).

Almost surely, 2^44441431221 is an apocalyptic number.

It is an amenable number.

44441431221 is a deficient number, since it is larger than the sum of its proper divisors (21111105867).

44441431221 is a wasteful number, since it uses less digits than its factorization.

44441431221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18967832.

The product of its digits is 12288, while the sum is 30.

Adding to 44441431221 its reverse (12213414444), we get a palindrome (56654845665).

It can be divided in two parts, 4444 and 1431221, that added together give a triangular number (1435665 = T₁₆₉₄).

The spelling of 44441431221 in words is "forty-four billion, four hundred forty-one million, four hundred thirty-one thousand, two hundred twenty-one".