1321231433104 has 80 divisors (see below), whose sum is σ = 2833317691776. Its totient is φ = 591812121600.

The previous prime is 1321231433099. The next prime is 1321231433107. The reversal of 1321231433104 is 4013341321231.

It is not an unprimeable number, because it can be changed into a prime (1321231433107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26679214 + ... + 26728690.

Almost surely, 2^{1321231433104} 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 1321231433104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1416658845888).

1321231433104 is an abundant number, since it is smaller than the sum of its proper divisors (1512086258672).

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

1321231433104 is a wasteful number, since it uses less digits than its factorization.

1321231433104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51704 (or 51698 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

Adding to 1321231433104 its reverse (4013341321231), we get a palindrome (5334572754335).

The spelling of 1321231433104 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-one million, four hundred thirty-three thousand, one hundred four".