12443330004021 has 16 divisors (see below), whose sum is σ = 21068071964800. Its totient is φ = 7110474287904.

The previous prime is 12443330004019. The next prime is 12443330004103. The reversal of 12443330004021 is 12040003334421.

It is not a de Polignac number, because 12443330004021 - 2¹ = 12443330004019 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 (12443330004221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32918862256 + ... + 32918862633.

It is an arithmetic number, because the mean of its divisors is an integer number (1316754497800).

Almost surely, 2^{12443330004021} is an apocalyptic number.

It is an amenable number.

12443330004021 is a deficient number, since it is larger than the sum of its proper divisors (8624741960779).

12443330004021 is an equidigital number, since it uses as much as digits as its factorization.

12443330004021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65837724905 (or 65837724899 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 12443330004021 its reverse (12040003334421), we get a palindrome (24483333338442).

The spelling of 12443330004021 in words is "twelve trillion, four hundred forty-three billion, three hundred thirty million, four thousand, twenty-one".