1321233203333 has 4 divisors (see below), whose sum is σ = 1327158016128. Its totient is φ = 1315308390540.

The previous prime is 1321233203291. The next prime is 1321233203351. The reversal of 1321233203333 is 3333023321231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321233203333 - 2³⁴ = 1304053334149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321233203296 and 1321233203305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321233203363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2962406063 + ... + 2962406508.

It is an arithmetic number, because the mean of its divisors is an integer number (331789504032).

Almost surely, 2^{1321233203333} is an apocalyptic number.

It is an amenable number.

1321233203333 is a deficient number, since it is larger than the sum of its proper divisors (5924812795).

1321233203333 is an equidigital number, since it uses as much as digits as its factorization.

1321233203333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5924812794.

The product of its (nonzero) digits is 17496, while the sum is 29.

Adding to 1321233203333 its reverse (3333023321231), we get a palindrome (4654256524564).

The spelling of 1321233203333 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-three million, two hundred three thousand, three hundred thirty-three".