111312312222211 has 4 divisors (see below), whose sum is σ = 111648603196024. Its totient is φ = 110976021248400.

The previous prime is 111312312222197. The next prime is 111312312222247. The reversal of 111312312222211 is 112222213213111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 111312312222211 - 2¹¹ = 111312312220163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111312312222271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168145486410 + ... + 168145487071.

It is an arithmetic number, because the mean of its divisors is an integer number (27912150799006).

Almost surely, 2^{111312312222211} is an apocalyptic number.

111312312222211 is a deficient number, since it is larger than the sum of its proper divisors (336290973813).

111312312222211 is an equidigital number, since it uses as much as digits as its factorization.

111312312222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336290973812.

The product of its digits is 576, while the sum is 25.

Adding to 111312312222211 its reverse (112222213213111), we get a palindrome (223534525435322).

The spelling of 111312312222211 in words is "one hundred eleven trillion, three hundred twelve billion, three hundred twelve million, two hundred twenty-two thousand, two hundred eleven".