2104204421 has 16 divisors (see below), whose sum is σ = 2335011840. Its totient is φ = 1880202480.

The previous prime is 2104204387. The next prime is 2104204423. The reversal of 2104204421 is 1244024012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2104204421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2104204393 and 2104204402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104204423) 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, 191930 + ... + 202596.

It is an arithmetic number, because the mean of its divisors is an integer number (145938240).

Almost surely, 2^2104204421 is an apocalyptic number.

It is an amenable number.

2104204421 is a deficient number, since it is larger than the sum of its proper divisors (230807419).

2104204421 is a wasteful number, since it uses less digits than its factorization.

2104204421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10984.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 2104204421 is about 45871.6080053883. The cubic root of 2104204421 is about 1281.4332133606.

Adding to 2104204421 its reverse (1244024012), we get a palindrome (3348228433).

The spelling of 2104204421 in words is "two billion, one hundred four million, two hundred four thousand, four hundred twenty-one".