1321442121321 has 12 divisors (see below), whose sum is σ = 2181428263872. Its totient is φ = 755109783576.

The previous prime is 1321442121193. The next prime is 1321442121343. The reversal of 1321442121321 is 1231212441231.

1321442121321 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 4 + 421 + 213 + 21 = 666.

It is not a de Polignac number, because 1321442121321 - 2⁷ = 1321442121193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321442120321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10487635821 + ... + 10487635946.

It is an arithmetic number, because the mean of its divisors is an integer number (181785688656).

Almost surely, 2^{1321442121321} is an apocalyptic number.

It is an amenable number.

1321442121321 is a deficient number, since it is larger than the sum of its proper divisors (859986142551).

1321442121321 is a wasteful number, since it uses less digits than its factorization.

1321442121321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20975271780 (or 20975271777 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

Adding to 1321442121321 its reverse (1231212441231), we get a palindrome (2552654562552).

The spelling of 1321442121321 in words is "one trillion, three hundred twenty-one billion, four hundred forty-two million, one hundred twenty-one thousand, three hundred twenty-one".