204401101 has 4 divisors (see below), whose sum is σ = 204611292. Its totient is φ = 204190912.

The previous prime is 204401063. The next prime is 204401117. The reversal of 204401101 is 101104402.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 91489225 + 112911876 = 9565^2 + 10626^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204401101 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 (204401501) 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, 103630 + ... + 105583.

It is an arithmetic number, because the mean of its divisors is an integer number (51152823).

Almost surely, 2^204401101 is an apocalyptic number.

It is an amenable number.

204401101 is a deficient number, since it is larger than the sum of its proper divisors (210191).

204401101 is an equidigital number, since it uses as much as digits as its factorization.

204401101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210190.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 204401101 is about 14296.8913054552. The cubic root of 204401101 is about 589.0620940471.

Adding to 204401101 its reverse (101104402), we get a palindrome (305505503).

The spelling of 204401101 in words is "two hundred four million, four hundred one thousand, one hundred one".