221302103 has 12 divisors (see below), whose sum is σ = 251641320. Its totient is φ = 194243280.

The previous prime is 221302049. The next prime is 221302111. The reversal of 221302103 is 301203122.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-221302103 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 (221302163) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28025 + ... + 35042.

It is an arithmetic number, because the mean of its divisors is an integer number (20970110).

Almost surely, 2^221302103 is an apocalyptic number.

221302103 is a deficient number, since it is larger than the sum of its proper divisors (30339217).

221302103 is a wasteful number, since it uses less digits than its factorization.

221302103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63118 (or 63107 counting only the distinct ones).

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

The square root of 221302103 is about 14876.2261007286. The cubic root of 221302103 is about 604.8697240155.

Adding to 221302103 its reverse (301203122), we get a palindrome (522505225).

The spelling of 221302103 in words is "two hundred twenty-one million, three hundred two thousand, one hundred three".