44143242221 has 8 divisors (see below), whose sum is σ = 47560158744. Its totient is φ = 40729366080.

The previous prime is 44143242217. The next prime is 44143242259. The reversal of 44143242221 is 12224234144.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17903778025 + 26239464196 = 133805^2 + 161986^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 44143242221 - 2² = 44143242217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44143242211) 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 7 ways as a sum of consecutive naturals, for example, 729890 + ... + 788051.

It is an arithmetic number, because the mean of its divisors is an integer number (5945019843).

Almost surely, 2^44143242221 is an apocalyptic number.

It is an amenable number.

44143242221 is a deficient number, since it is larger than the sum of its proper divisors (3416916523).

44143242221 is a wasteful number, since it uses less digits than its factorization.

44143242221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520191.

The product of its digits is 12288, while the sum is 29.

Adding to 44143242221 its reverse (12224234144), we get a palindrome (56367476365).

The spelling of 44143242221 in words is "forty-four billion, one hundred forty-three million, two hundred forty-two thousand, two hundred twenty-one".