21304242112 has 28 divisors (see below), whose sum is σ = 42283629936. Its totient is φ = 10650099200.

The previous prime is 21304242103. The next prime is 21304242151. The reversal of 21304242112 is 21124240312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 342573 + ... + 399955.

Almost surely, 2^21304242112 is an apocalyptic number.

It is an amenable number.

21304242112 is a deficient number, since it is larger than the sum of its proper divisors (20979387824).

21304242112 is an equidigital number, since it uses as much as digits as its factorization.

21304242112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63196 (or 63186 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21304242112 its reverse (21124240312), we get a palindrome (42428482424).

The spelling of 21304242112 in words is "twenty-one billion, three hundred four million, two hundred forty-two thousand, one hundred twelve".