11111100311321 has 8 divisors (see below), whose sum is σ = 11186427888000. Its totient is φ = 11035782820720.

The previous prime is 11111100311219. The next prime is 11111100311323. The reversal of 11111100311321 is 12311300111111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11111100311321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111100311321.

It is not an unprimeable number, because it can be changed into a prime (11111100311323) 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, 304211 + ... + 4723848.

It is an arithmetic number, because the mean of its divisors is an integer number (1398303486000).

Almost surely, 2^{11111100311321} is an apocalyptic number.

It is an amenable number.

11111100311321 is a deficient number, since it is larger than the sum of its proper divisors (75327576679).

11111100311321 is a wasteful number, since it uses less digits than its factorization.

11111100311321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043039.

The product of its (nonzero) digits is 18, while the sum is 17.

Adding to 11111100311321 its reverse (12311300111111), we get a palindrome (23422400422432).

The spelling of 11111100311321 in words is "eleven trillion, one hundred eleven billion, one hundred million, three hundred eleven thousand, three hundred twenty-one".