221023103 has 16 divisors (see below), whose sum is σ = 268012800. Its totient is φ = 177933696.

The previous prime is 221023097. The next prime is 221023109. The reversal of 221023103 is 301320122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (221023097) and next prime (221023109).

It is not a de Polignac number, because 221023103 - 2⁶ = 221023039 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 (221023109) 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 15 ways as a sum of consecutive naturals, for example, 65348 + ... + 68646.

It is an arithmetic number, because the mean of its divisors is an integer number (16750800).

Almost surely, 2^221023103 is an apocalyptic number.

221023103 is a deficient number, since it is larger than the sum of its proper divisors (46989697).

221023103 is a wasteful number, since it uses less digits than its factorization.

221023103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3886.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 221023103 is about 14866.8457649900. The cubic root of 221023103 is about 604.6154266552.

Adding to 221023103 its reverse (301320122), we get a palindrome (522343225).

The spelling of 221023103 in words is "two hundred twenty-one million, twenty-three thousand, one hundred three".