11103021321 has 8 divisors (see below), whose sum is σ = 16918889664. Its totient is φ = 6344583600.

The previous prime is 11103021299. The next prime is 11103021331. The reversal of 11103021321 is 12312030111.

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 11103021321 - 2⁶ = 11103021257 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11103021321.

It is not an unprimeable number, because it can be changed into a prime (11103021331) 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, 264357630 + ... + 264357671.

It is an arithmetic number, because the mean of its divisors is an integer number (2114861208).

Almost surely, 2^11103021321 is an apocalyptic number.

It is an amenable number.

11103021321 is a deficient number, since it is larger than the sum of its proper divisors (5815868343).

11103021321 is an equidigital number, since it uses as much as digits as its factorization.

11103021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528715311.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 11103021321 its reverse (12312030111), we get a palindrome (23415051432).

The spelling of 11103021321 in words is "eleven billion, one hundred three million, twenty-one thousand, three hundred twenty-one".