1321233221304 has 32 divisors (see below), whose sum is σ = 3670092282000. Its totient is φ = 440411073696.

The previous prime is 1321233221303. The next prime is 1321233221377. The reversal of 1321233221304 is 4031223321231.

1321233221304 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 2 + 332 + 21 + 304 = 666.

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 (1321233221303) 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, 3058410019 + ... + 3058410450.

Almost surely, 2^{1321233221304} is an apocalyptic number.

It is an amenable number.

1321233221304 is an abundant number, since it is smaller than the sum of its proper divisors (2348859060696).

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

1321233221304 is a wasteful number, since it uses less digits than its factorization.

1321233221304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6116820484 (or 6116820474 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 1321233221304 its reverse (4031223321231), we get a palindrome (5352456542535).

The spelling of 1321233221304 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-three million, two hundred twenty-one thousand, three hundred four".