221022103 has 4 divisors (see below), whose sum is σ = 226412928. Its totient is φ = 215631280.

The previous prime is 221022097. The next prime is 221022143. The reversal of 221022103 is 301220122.

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 221022103 - 2²⁵ = 187467671 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 (221022143) 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, 2695351 + ... + 2695432.

It is an arithmetic number, because the mean of its divisors is an integer number (56603232).

Almost surely, 2^221022103 is an apocalyptic number.

221022103 is a deficient number, since it is larger than the sum of its proper divisors (5390825).

221022103 is an equidigital number, since it uses as much as digits as its factorization.

221022103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5390824.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 221022103 is about 14866.8121330701. The cubic root of 221022103 is about 604.6145148104.

Adding to 221022103 its reverse (301220122), we get a palindrome (522242225).

The spelling of 221022103 in words is "two hundred twenty-one million, twenty-two thousand, one hundred three".