11121333321 has 8 divisors (see below), whose sum is σ = 16946793664. Its totient is φ = 6355047600.

The previous prime is 11121333299. The next prime is 11121333323. The reversal of 11121333321 is 12333312111.

It is a happy number.

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

It is not a de Polignac number, because 11121333321 - 2¹⁰ = 11121332297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 529587301 = 11121333321 / (1 + 1 + 1 + 2 + 1 + 3 + 3 + 3 + 3 + 2 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11121333323) 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, 264793630 + ... + 264793671.

It is an arithmetic number, because the mean of its divisors is an integer number (2118349208).

Almost surely, 2^11121333321 is an apocalyptic number.

It is an amenable number.

11121333321 is a deficient number, since it is larger than the sum of its proper divisors (5825460343).

11121333321 is an equidigital number, since it uses as much as digits as its factorization.

11121333321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529587311.

The product of its digits is 324, while the sum is 21.

Adding to 11121333321 its reverse (12333312111), we get a palindrome (23454645432).

The spelling of 11121333321 in words is "eleven billion, one hundred twenty-one million, three hundred thirty-three thousand, three hundred twenty-one".