443322213221 has 4 divisors (see below), whose sum is σ = 443338807200. Its totient is φ = 443305619244.

The previous prime is 443322213193. The next prime is 443322213227. The reversal of 443322213221 is 122312223344.

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 a de Polignac number, because none of the positive numbers 2^k-443322213221 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 (443322213227) 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, 8256851 + ... + 8310368.

It is an arithmetic number, because the mean of its divisors is an integer number (110834701800).

Almost surely, 2^443322213221 is an apocalyptic number.

It is an amenable number.

443322213221 is a deficient number, since it is larger than the sum of its proper divisors (16593979).

443322213221 is a wasteful number, since it uses less digits than its factorization.

443322213221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16593978.

The product of its digits is 13824, while the sum is 29.

Adding to 443322213221 its reverse (122312223344), we get a palindrome (565634436565).

The spelling of 443322213221 in words is "four hundred forty-three billion, three hundred twenty-two million, two hundred thirteen thousand, two hundred twenty-one".