1233823321321 has 4 divisors (see below), whose sum is σ = 1233900902032. Its totient is φ = 1233745740612.

The previous prime is 1233823321319. The next prime is 1233823321333. The reversal of 1233823321321 is 1231233283321.

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 1233823321321 - 2¹ = 1233823321319 is a prime.

It is a super-2 number, since 2×1233823321321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1233823321121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38766495 + ... + 38798308.

It is an arithmetic number, because the mean of its divisors is an integer number (308475225508).

Almost surely, 2^{1233823321321} is an apocalyptic number.

It is an amenable number.

1233823321321 is a deficient number, since it is larger than the sum of its proper divisors (77580711).

1233823321321 is an equidigital number, since it uses as much as digits as its factorization.

1233823321321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77580710.

The product of its digits is 31104, while the sum is 34.

The spelling of 1233823321321 in words is "one trillion, two hundred thirty-three billion, eight hundred twenty-three million, three hundred twenty-one thousand, three hundred twenty-one".