2104214321 has 24 divisors (see below), whose sum is σ = 2495285352. Its totient is φ = 1766336000.

The previous prime is 2104214293. The next prime is 2104214347. The reversal of 2104214321 is 1234124012.

It can be written as a sum of positive squares in 4 ways, for example, as 846519025 + 1257695296 = 29095^2 + 35464^2 .

It is not a de Polignac number, because 2104214321 - 2²⁶ = 2037105457 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 = 2104214293 and 2104214302.

It is not an unprimeable number, because it can be changed into a prime (2104214351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 99371 + ... + 118671.

It is an arithmetic number, because the mean of its divisors is an integer number (103970223).

Almost surely, 2^2104214321 is an apocalyptic number.

It is an amenable number.

2104214321 is a deficient number, since it is larger than the sum of its proper divisors (391071031).

2104214321 is a wasteful number, since it uses less digits than its factorization.

2104214321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19393 (or 19382 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2104214321 is about 45871.7159151475. The cubic root of 2104214321 is about 1281.4352230147.

Adding to 2104214321 its reverse (1234124012), we get a palindrome (3338338333).

The spelling of 2104214321 in words is "two billion, one hundred four million, two hundred fourteen thousand, three hundred twenty-one".