443212134021 has 32 divisors (see below), whose sum is σ = 669951283200. Its totient is φ = 293147999424.

The previous prime is 443212133971. The next prime is 443212134047. The reversal of 443212134021 is 120431212344.

443212134021 is a `hidden beast` number, since 4 + 43 + 2 + 1 + 213 + 402 + 1 = 666.

It is not a de Polignac number, because 443212134021 - 2²⁵ = 443178579589 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (443212834021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520116 + ... + 1075613.

It is an arithmetic number, because the mean of its divisors is an integer number (20935977600).

Almost surely, 2^443212134021 is an apocalyptic number.

It is an amenable number.

443212134021 is a deficient number, since it is larger than the sum of its proper divisors (226739149179).

443212134021 is an equidigital number, since it uses as much as digits as its factorization.

443212134021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595877 (or 1595859 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 443212134021 its reverse (120431212344), we get a palindrome (563643346365).

The spelling of 443212134021 in words is "four hundred forty-three billion, two hundred twelve million, one hundred thirty-four thousand, twenty-one".