111121220321 has 8 divisors (see below), whose sum is σ = 111371143104. Its totient is φ = 110871394480.

The previous prime is 111121220311. The next prime is 111121220323. The reversal of 111121220321 is 123022121111.

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 not a de Polignac number, because 111121220321 - 2²² = 111117026017 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 111121220321.

It is not an unprimeable number, because it can be changed into a prime (111121220323) 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, 2582435 + ... + 2625111.

It is an arithmetic number, because the mean of its divisors is an integer number (13921392888).

Almost surely, 2^111121220321 is an apocalyptic number.

It is an amenable number.

111121220321 is a deficient number, since it is larger than the sum of its proper divisors (249922783).

111121220321 is an equidigital number, since it uses as much as digits as its factorization.

111121220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48471.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111121220321 its reverse (123022121111), we get a palindrome (234143341432).

The spelling of 111121220321 in words is "one hundred eleven billion, one hundred twenty-one million, two hundred twenty thousand, three hundred twenty-one".