111312220321 has 8 divisors (see below), whose sum is σ = 112987476288. Its totient is φ = 109639950000.

The previous prime is 111312220301. The next prime is 111312220337. The reversal of 111312220321 is 123022213111.

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-111312220321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111312220301) 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, 671230 + ... + 820471.

It is an arithmetic number, because the mean of its divisors is an integer number (14123434536).

Almost surely, 2^111312220321 is an apocalyptic number.

It is an amenable number.

111312220321 is a deficient number, since it is larger than the sum of its proper divisors (1675255967).

111312220321 is a wasteful number, since it uses less digits than its factorization.

111312220321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492823.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111312220321 its reverse (123022213111), we get a palindrome (234334433432).

The spelling of 111312220321 in words is "one hundred eleven billion, three hundred twelve million, two hundred twenty thousand, three hundred twenty-one".