443221400002 has 4 divisors (see below), whose sum is σ = 664832100006. Its totient is φ = 221610700000.

The previous prime is 443221399997. The next prime is 443221400023. The reversal of 443221400002 is 200004122344.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 382528643121 + 60692756881 = 618489^2 + 246359^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 110805349999 + ... + 110805350002.

Almost surely, 2^443221400002 is an apocalyptic number.

443221400002 is a deficient number, since it is larger than the sum of its proper divisors (221610700004).

443221400002 is a wasteful number, since it uses less digits than its factorization.

443221400002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221610700003.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 443221400002 its reverse (200004122344), we get a palindrome (643225522346).

The spelling of 443221400002 in words is "four hundred forty-three billion, two hundred twenty-one million, four hundred thousand, two".