111312222321 has 8 divisors (see below), whose sum is σ = 148736851840. Its totient is φ = 74047870512.

The previous prime is 111312222293. The next prime is 111312222349. The reversal of 111312222321 is 123222213111.

It is an interprime number because it is at equal distance from previous prime (111312222293) and next prime (111312222349).

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

It is not a de Polignac number, because 111312222321 - 2⁹ = 111312221809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111312222121) 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, 40067806 + ... + 40070583.

It is an arithmetic number, because the mean of its divisors is an integer number (18592106480).

Almost surely, 2^111312222321 is an apocalyptic number.

It is an amenable number.

111312222321 is a deficient number, since it is larger than the sum of its proper divisors (37424629519).

111312222321 is an equidigital number, since it uses as much as digits as its factorization.

111312222321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80138855.

The product of its digits is 288, while the sum is 21.

Adding to 111312222321 its reverse (123222213111), we get a palindrome (234534435432).

The spelling of 111312222321 in words is "one hundred eleven billion, three hundred twelve million, two hundred twenty-two thousand, three hundred twenty-one".