111000332221 has 4 divisors (see below), whose sum is σ = 111001011100. Its totient is φ = 110999653344.

The previous prime is 111000332203. The next prime is 111000332239. The reversal of 111000332221 is 122233000111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 122233000111 = 13183 ⋅9272017.

It is an interprime number because it is at equal distance from previous prime (111000332203) and next prime (111000332239).

It can be written as a sum of positive squares in 2 ways, for example, as 23614468900 + 87385863321 = 153670^2 + 295611^2 .

It is a cyclic number.

It is not a de Polignac number, because 111000332221 - 2²⁹ = 110463461309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111000332195 and 111000332204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111000332251) 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, 72295 + ... + 476683.

It is an arithmetic number, because the mean of its divisors is an integer number (27750252775).

Almost surely, 2^111000332221 is an apocalyptic number.

It is an amenable number.

111000332221 is a deficient number, since it is larger than the sum of its proper divisors (678879).

111000332221 is an equidigital number, since it uses as much as digits as its factorization.

111000332221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678878.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 111000332221 its reverse (122233000111), we get a palindrome (233233332332).

The spelling of 111000332221 in words is "one hundred eleven billion, three hundred thirty-two thousand, two hundred twenty-one".