443212340420321 has 4 divisors (see below), whose sum is σ = 443395259259072. Its totient is φ = 443029421581572.

The previous prime is 443212340420303. The next prime is 443212340420347. The reversal of 443212340420321 is 123024043212344.

It is a happy number.

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 443212340420321 - 2²² = 443212336226017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (443272340420321) 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, 91459415741 + ... + 91459420586.

It is an arithmetic number, because the mean of its divisors is an integer number (110848814814768).

Almost surely, 2^{443212340420321} is an apocalyptic number.

It is an amenable number.

443212340420321 is a deficient number, since it is larger than the sum of its proper divisors (182918838751).

443212340420321 is a wasteful number, since it uses less digits than its factorization.

443212340420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182918838750.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 443212340420321 its reverse (123024043212344), we get a palindrome (566236383632665).

The spelling of 443212340420321 in words is "four hundred forty-three trillion, two hundred twelve billion, three hundred forty million, four hundred twenty thousand, three hundred twenty-one".