11033312321 has 4 divisors (see below), whose sum is σ = 11035058112. Its totient is φ = 11031566532.

The previous prime is 11033312291. The next prime is 11033312327. The reversal of 11033312321 is 12321333011.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12321333011 = 13 ⋅947794847.

It is a cyclic number.

It is not a de Polignac number, because 11033312321 - 2²² = 11029118017 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11033312293 and 11033312302.

It is not an unprimeable number, because it can be changed into a prime (11033312327) 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, 863381 + ... + 876066.

It is an arithmetic number, because the mean of its divisors is an integer number (2758764528).

Almost surely, 2^11033312321 is an apocalyptic number.

It is an amenable number.

11033312321 is a deficient number, since it is larger than the sum of its proper divisors (1745791).

11033312321 is an equidigital number, since it uses as much as digits as its factorization.

11033312321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745790.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 11033312321 its reverse (12321333011), we get a palindrome (23354645332).

The spelling of 11033312321 in words is "eleven billion, thirty-three million, three hundred twelve thousand, three hundred twenty-one".