111211112321 has 8 divisors (see below), whose sum is σ = 112665984000. Its totient is φ = 109757419200.

The previous prime is 111211112297. The next prime is 111211112339. The reversal of 111211112321 is 123211112111.

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-111211112321 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 111211112321.

It is not an unprimeable number, because it can be changed into a prime (111211112351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103880 + ... + 482921.

It is an arithmetic number, because the mean of its divisors is an integer number (14083248000).

Almost surely, 2^111211112321 is an apocalyptic number.

It is an amenable number.

111211112321 is a deficient number, since it is larger than the sum of its proper divisors (1454871679).

111211112321 is an equidigital number, since it uses as much as digits as its factorization.

111211112321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 589279.

The product of its digits is 24, while the sum is 17.

Adding to 111211112321 its reverse (123211112111), we get a palindrome (234422224432).

The spelling of 111211112321 in words is "one hundred eleven billion, two hundred eleven million, one hundred twelve thousand, three hundred twenty-one".