440322221221 has 4 divisors (see below), whose sum is σ = 440338413600. Its totient is φ = 440306028844.

The previous prime is 440322221153. The next prime is 440322221233. The reversal of 440322221221 is 122122223044.

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 440322221221 - 2¹¹ = 440322219173 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 (440322221291) 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, 8055331 + ... + 8109808.

It is an arithmetic number, because the mean of its divisors is an integer number (110084603400).

Almost surely, 2^440322221221 is an apocalyptic number.

It is an amenable number.

440322221221 is a deficient number, since it is larger than the sum of its proper divisors (16192379).

440322221221 is a wasteful number, since it uses less digits than its factorization.

440322221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16192378.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 440322221221 its reverse (122122223044), we get a palindrome (562444444265).

The spelling of 440322221221 in words is "four hundred forty billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred twenty-one".