440553124121221 has 8 divisors (see below), whose sum is σ = 442769946336000. Its totient is φ = 438336331781040.

The previous prime is 440553124121207. The next prime is 440553124121237. The reversal of 440553124121221 is 122121421355044.

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

It is a cyclic number.

It is not a de Polignac number, because 440553124121221 - 2¹³ = 440553124113029 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 (440553124121251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22398795 + ... + 37186183.

It is an arithmetic number, because the mean of its divisors is an integer number (55346243292000).

Almost surely, 2^{440553124121221} is an apocalyptic number.

It is an amenable number.

440553124121221 is a deficient number, since it is larger than the sum of its proper divisors (2216822214779).

440553124121221 is a wasteful number, since it uses less digits than its factorization.

440553124121221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14937299.

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 440553124121221 its reverse (122121421355044), we get a palindrome (562674545476265).

The spelling of 440553124121221 in words is "four hundred forty trillion, five hundred fifty-three billion, one hundred twenty-four million, one hundred twenty-one thousand, two hundred twenty-one".