443212224421 has 4 divisors (see below), whose sum is σ = 443299116844. Its totient is φ = 443125332000.

The previous prime is 443212224407. The next prime is 443212224449. The reversal of 443212224421 is 124422212344.

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 53817504196 + 389394720225 = 231986^2 + 624015^2 .

It is a cyclic number.

It is not a de Polignac number, because 443212224421 - 2¹⁷ = 443212093349 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 (443212224451) 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, 43438560 + ... + 43448761.

It is an arithmetic number, because the mean of its divisors is an integer number (110824779211).

Almost surely, 2^443212224421 is an apocalyptic number.

It is an amenable number.

443212224421 is a deficient number, since it is larger than the sum of its proper divisors (86892423).

443212224421 is an equidigital number, since it uses as much as digits as its factorization.

443212224421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86892422.

The product of its digits is 24576, while the sum is 31.

Adding to 443212224421 its reverse (124422212344), we get a palindrome (567634436765).

The spelling of 443212224421 in words is "four hundred forty-three billion, two hundred twelve million, two hundred twenty-four thousand, four hundred twenty-one".