2104310021 has 8 divisors (see below), whose sum is σ = 2416432800. Its totient is φ = 1812324240.

The previous prime is 2104310017. The next prime is 2104310027. The reversal of 2104310021 is 1200134012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2104310021 - 2² = 2104310017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2104309978 and 2104310005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104310027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5034026 + ... + 5034443.

It is an arithmetic number, because the mean of its divisors is an integer number (302054100).

Almost surely, 2^2104310021 is an apocalyptic number.

It is an amenable number.

2104310021 is a deficient number, since it is larger than the sum of its proper divisors (312122779).

2104310021 is a wasteful number, since it uses less digits than its factorization.

2104310021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10068499.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2104310021 is about 45872.7590297335. The cubic root of 2104310021 is about 1281.4546493457.

Adding to 2104310021 its reverse (1200134012), we get a palindrome (3304444033).

The spelling of 2104310021 in words is "two billion, one hundred four million, three hundred ten thousand, twenty-one".