443012012121 has 16 divisors (see below), whose sum is σ = 675140178944. Its totient is φ = 253121875344.

The previous prime is 443012012099. The next prime is 443012012143. The reversal of 443012012121 is 121210210344.

It is an interprime number because it is at equal distance from previous prime (443012012099) and next prime (443012012143).

It is not a de Polignac number, because 443012012121 - 2⁹ = 443012011609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (443012012161) 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 15 ways as a sum of consecutive naturals, for example, 964015 + ... + 1347348.

It is an arithmetic number, because the mean of its divisors is an integer number (42196261184).

Almost surely, 2^443012012121 is an apocalyptic number.

It is an amenable number.

443012012121 is a deficient number, since it is larger than the sum of its proper divisors (232128166823).

443012012121 is a wasteful number, since it uses less digits than its factorization.

443012012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2320500.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 443012012121 its reverse (121210210344), we get a palindrome (564222222465).

The spelling of 443012012121 in words is "four hundred forty-three billion, twelve million, twelve thousand, one hundred twenty-one".