2104212321 has 24 divisors (see below), whose sum is σ = 3095863680. Its totient is φ = 1376964576.

The previous prime is 2104212289. The next prime is 2104212329. The reversal of 2104212321 is 1232124012.

It is a happy number.

2104212321 is a `hidden beast` number, since 2 + 10 + 421 + 232 + 1 = 666.

It is not a de Polignac number, because 2104212321 - 2⁵ = 2104212289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2104212294 and 2104212303.

It is not an unprimeable number, because it can be changed into a prime (2104212329) 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, 114450 + ... + 131556.

It is an arithmetic number, because the mean of its divisors is an integer number (128994320).

Almost surely, 2^2104212321 is an apocalyptic number.

It is an amenable number.

2104212321 is a deficient number, since it is larger than the sum of its proper divisors (991651359).

2104212321 is a wasteful number, since it uses less digits than its factorization.

2104212321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17365 (or 17362 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2104212321 is about 45871.6941152166. The cubic root of 2104212321 is about 1281.4348170244.

Adding to 2104212321 its reverse (1232124012), we get a palindrome (3336336333).

The spelling of 2104212321 in words is "two billion, one hundred four million, two hundred twelve thousand, three hundred twenty-one".