11111330321 has 32 divisors (see below), whose sum is σ = 14408620800. Its totient is φ = 8320942080.

The previous prime is 11111330287. The next prime is 11111330327. The reversal of 11111330321 is 12303311111.

It is not a de Polignac number, because 11111330321 - 2⁶ = 11111330257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11111330321.

It is not an unprimeable number, because it can be changed into a prime (11111330327) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2433881 + ... + 2438441.

It is an arithmetic number, because the mean of its divisors is an integer number (450269400).

Almost surely, 2^11111330321 is an apocalyptic number.

It is an amenable number.

11111330321 is a deficient number, since it is larger than the sum of its proper divisors (3297290479).

11111330321 is a wasteful number, since it uses less digits than its factorization.

11111330321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6009.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 11111330321 its reverse (12303311111), we get a palindrome (23414641432).

The spelling of 11111330321 in words is "eleven billion, one hundred eleven million, three hundred thirty thousand, three hundred twenty-one".