21240130302304 has 48 divisors (see below), whose sum is σ = 41892309675216. Its totient is φ = 10600815859200.

The previous prime is 21240130302289. The next prime is 21240130302353. The reversal of 21240130302304 is 40320303104212.

It is a super-2 number, since 2×21240130302304² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461107434 + ... + 461153494.

It is an arithmetic number, because the mean of its divisors is an integer number (872756451567).

Almost surely, 2^{21240130302304} is an apocalyptic number.

It is an amenable number.

21240130302304 is a deficient number, since it is larger than the sum of its proper divisors (20652179372912).

21240130302304 is a wasteful number, since it uses less digits than its factorization.

21240130302304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71879 (or 71871 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 21240130302304 its reverse (40320303104212), we get a palindrome (61560433406516).

The spelling of 21240130302304 in words is "twenty-one trillion, two hundred forty billion, one hundred thirty million, three hundred two thousand, three hundred four".