111000312023221 has 4 divisors (see below), whose sum is σ = 117529742142252. Its totient is φ = 104470881904192.

The previous prime is 111000312023207. The next prime is 111000312023231. The reversal of 111000312023221 is 122320213000111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71648352766225 + 39351959256996 = 8464535^2 + 6273114^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000312023221 - 2²⁵ = 111000278468789 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 (111000312023231) 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, 3264715059490 + ... + 3264715059523.

It is an arithmetic number, because the mean of its divisors is an integer number (29382435535563).

Almost surely, 2^{111000312023221} is an apocalyptic number.

It is an amenable number.

111000312023221 is a deficient number, since it is larger than the sum of its proper divisors (6529430119031).

111000312023221 is an equidigital number, since it uses as much as digits as its factorization.

111000312023221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6529430119030.

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

Adding to 111000312023221 its reverse (122320213000111), we get a palindrome (233320525023332).

The spelling of 111000312023221 in words is "one hundred eleven trillion, three hundred twelve million, twenty-three thousand, two hundred twenty-one".