1321320402233 has 8 divisors (see below), whose sum is σ = 1423849250376. Its totient is φ = 1218918528000.

The previous prime is 1321320402217. The next prime is 1321320402263. The reversal of 1321320402233 is 3322040231231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 175932430249 + 1145387971984 = 419443^2 + 1070228^2 .

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 1321320402233 - 2⁴ = 1321320402217 is a prime.

It is a super-2 number, since 2×1321320402233² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1321320402263) 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, 31721858 + ... + 31763483.

It is an arithmetic number, because the mean of its divisors is an integer number (177981156297).

Almost surely, 2^{1321320402233} is an apocalyptic number.

1321320402233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1321320402233 is a deficient number, since it is larger than the sum of its proper divisors (102528848143).

1321320402233 is a wasteful number, since it uses less digits than its factorization.

1321320402233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63486955.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 1321320402233 its reverse (3322040231231), we get a palindrome (4643360633464).

The spelling of 1321320402233 in words is "one trillion, three hundred twenty-one billion, three hundred twenty million, four hundred two thousand, two hundred thirty-three".