12231243134432 has 96 divisors (see below), whose sum is σ = 27796424527872. Its totient is φ = 5189398401024.

The previous prime is 12231243134347. The next prime is 12231243134443. The reversal of 12231243134432 is 23443134213221.

It is a happy number.

It is a super-2 number, since 2×12231243134432² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12231243134392 and 12231243134401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72985328 + ... + 73152720.

It is an arithmetic number, because the mean of its divisors is an integer number (289546088832).

Almost surely, 2^{12231243134432} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12231243134432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13898212263936).

12231243134432 is an abundant number, since it is smaller than the sum of its proper divisors (15565181393440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12231243134432 is a wasteful number, since it uses less digits than its factorization.

12231243134432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170680 (or 170672 counting only the distinct ones).

The product of its digits is 82944, while the sum is 35.

Adding to 12231243134432 its reverse (23443134213221), we get a palindrome (35674377347653).

The spelling of 12231243134432 in words is "twelve trillion, two hundred thirty-one billion, two hundred forty-three million, one hundred thirty-four thousand, four hundred thirty-two".