111311223311221 has 8 divisors (see below), whose sum is σ = 111457530504320. Its totient is φ = 111164920169472.

The previous prime is 111311223311143. The next prime is 111311223311243. The reversal of 111311223311221 is 122113322113111.

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 111311223311221 - 2³⁹ = 110761467497333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311223351221) 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, 56086756 + ... + 58037458.

It is an arithmetic number, because the mean of its divisors is an integer number (13932191313040).

Almost surely, 2^{111311223311221} is an apocalyptic number.

It is an amenable number.

111311223311221 is a deficient number, since it is larger than the sum of its proper divisors (146307193099).

111311223311221 is an equidigital number, since it uses as much as digits as its factorization.

111311223311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025675.

The product of its digits is 432, while the sum is 25.

Adding to 111311223311221 its reverse (122113322113111), we get a palindrome (233424545424332).

The spelling of 111311223311221 in words is "one hundred eleven trillion, three hundred eleven billion, two hundred twenty-three million, three hundred eleven thousand, two hundred twenty-one".