221100103 has 12 divisors (see below), whose sum is σ = 257555640. Its totient is φ = 189250992.

The previous prime is 221100101. The next prime is 221100107. The reversal of 221100103 is 301001122.

It is not a de Polignac number, because 221100103 - 2¹ = 221100101 is a prime.

It is a super-2 number, since 2×221100103² = 97770511093221218, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221100103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100101) 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, 37900 + ... + 43342.

It is an arithmetic number, because the mean of its divisors is an integer number (21462970).

Almost surely, 2^221100103 is an apocalyptic number.

221100103 is a deficient number, since it is larger than the sum of its proper divisors (36455537).

221100103 is an equidigital number, since it uses as much as digits as its factorization.

221100103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6286 (or 6279 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 221100103 is about 14869.4351943845. The cubic root of 221100103 is about 604.6856304513.

Adding to 221100103 its reverse (301001122), we get a palindrome (522101225).

The spelling of 221100103 in words is "two hundred twenty-one million, one hundred thousand, one hundred three".