443400212143121 has 4 divisors (see below), whose sum is σ = 443401450796772. Its totient is φ = 443398973489472.

The previous prime is 443400212143093. The next prime is 443400212143183. The reversal of 443400212143121 is 121341212004344.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58091225497600 + 385308986645521 = 7621760^2 + 19629289^2 .

It is a cyclic number.

It is not a de Polignac number, because 443400212143121 - 2³⁸ = 443125334236177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (443400212143321) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 618789716 + ... + 619505861.

It is an arithmetic number, because the mean of its divisors is an integer number (110850362699193).

Almost surely, 2^{443400212143121} is an apocalyptic number.

It is an amenable number.

443400212143121 is a deficient number, since it is larger than the sum of its proper divisors (1238653651).

443400212143121 is a wasteful number, since it uses less digits than its factorization.

443400212143121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238653650.

The product of its (nonzero) digits is 18432, while the sum is 32.

Adding to 443400212143121 its reverse (121341212004344), we get a palindrome (564741424147465).

The spelling of 443400212143121 in words is "four hundred forty-three trillion, four hundred billion, two hundred twelve million, one hundred forty-three thousand, one hundred twenty-one".