221112103 has 4 divisors (see below), whose sum is σ = 221768560. Its totient is φ = 220455648.

The previous prime is 221112071. The next prime is 221112113. The reversal of 221112103 is 301211122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 301211122 = 2 ⋅150605561.

It is a cyclic number.

It is not a de Polignac number, because 221112103 - 2⁵ = 221112071 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 (221112113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 327723 + ... + 328396.

It is an arithmetic number, because the mean of its divisors is an integer number (55442140).

Almost surely, 2^221112103 is an apocalyptic number.

221112103 is a deficient number, since it is larger than the sum of its proper divisors (656457).

221112103 is an equidigital number, since it uses as much as digits as its factorization.

221112103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656456.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 221112103 is about 14869.8387012099. The cubic root of 221112103 is about 604.6965698346.

Adding to 221112103 its reverse (301211122), we get a palindrome (522323225).

The spelling of 221112103 in words is "two hundred twenty-one million, one hundred twelve thousand, one hundred three".