204021103 has 16 divisors (see below), whose sum is σ = 241540992. Its totient is φ = 169884000.

The previous prime is 204021101. The next prime is 204021121. The reversal of 204021103 is 301120402.

It is not a de Polignac number, because 204021103 - 2¹ = 204021101 is a prime.

It is a super-2 number, since 2×204021103² = 83249220938673218, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204021101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13288 + ... + 24178.

It is an arithmetic number, because the mean of its divisors is an integer number (15096312).

Almost surely, 2^204021103 is an apocalyptic number.

204021103 is a deficient number, since it is larger than the sum of its proper divisors (37519889).

204021103 is a wasteful number, since it uses less digits than its factorization.

204021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11046.

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

The square root of 204021103 is about 14283.5955907468. The cubic root of 204021103 is about 588.6968297480.

Adding to 204021103 its reverse (301120402), we get a palindrome (505141505).

The spelling of 204021103 in words is "two hundred four million, twenty-one thousand, one hundred three".