12432221464444 has 6 divisors (see below), whose sum is σ = 21756387562784. Its totient is φ = 6216110732220.

The previous prime is 12432221464441. The next prime is 12432221464451. The reversal of 12432221464444 is 44446412223421.

It is a self number, because there is not a number n which added to its sum of digits gives 12432221464444.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12432221464441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1554027683052 + ... + 1554027683059.

Almost surely, 2^{12432221464444} is an apocalyptic number.

It is an amenable number.

12432221464444 is a deficient number, since it is larger than the sum of its proper divisors (9324166098340).

12432221464444 is a wasteful number, since it uses less digits than its factorization.

12432221464444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3108055366115 (or 3108055366113 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 43.

Adding to 12432221464444 its reverse (44446412223421), we get a palindrome (56878633687865).

The spelling of 12432221464444 in words is "twelve trillion, four hundred thirty-two billion, two hundred twenty-one million, four hundred sixty-four thousand, four hundred forty-four".