12443211234421 has 8 divisors (see below), whose sum is σ = 13777015424544. Its totient is φ = 11143174239120.

The previous prime is 12443211234409. The next prime is 12443211234439.

12443211234421 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12443211234421 - 2²³ = 12443202845813 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 (12443211234451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8441797930 + ... + 8441799403.

It is an arithmetic number, because the mean of its divisors is an integer number (1722126928068).

Almost surely, 2^{12443211234421} is an apocalyptic number.

12443211234421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12443211234421 is a deficient number, since it is larger than the sum of its proper divisors (1333804190123).

12443211234421 is a wasteful number, since it uses less digits than its factorization.

12443211234421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16883597411.

The product of its digits is 36864, while the sum is 34.

It can be divided in two parts, 1244321 and 1234421, that added together give a palindrome (2478742).

The spelling of 12443211234421 in words is "twelve trillion, four hundred forty-three billion, two hundred eleven million, two hundred thirty-four thousand, four hundred twenty-one".