1321330404433 has 8 divisors (see below), whose sum is σ = 1426212603200. Its totient is φ = 1216911262608.

The previous prime is 1321330404413. The next prime is 1321330404463. The reversal of 1321330404433 is 3344040331231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321330404433 - 2²¹ = 1321328307281 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321330404395 and 1321330404404.

It is not an unprimeable number, because it can be changed into a prime (1321330404403) 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, 115758303 + ... + 115769716.

It is an arithmetic number, because the mean of its divisors is an integer number (178276575400).

Almost surely, 2^{1321330404433} is an apocalyptic number.

1321330404433 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321330404433 is a deficient number, since it is larger than the sum of its proper divisors (104882198767).

1321330404433 is a wasteful number, since it uses less digits than its factorization.

1321330404433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231528471.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 1321330404433 its reverse (3344040331231), we get a palindrome (4665370735664).

The spelling of 1321330404433 in words is "one trillion, three hundred twenty-one billion, three hundred thirty million, four hundred four thousand, four hundred thirty-three".