21301060724 has 12 divisors (see below), whose sum is σ = 39469612644. Its totient is φ = 10024028544.

The previous prime is 21301060723. The next prime is 21301060733. The reversal of 21301060724 is 42706010312.

It can be written as a sum of positive squares in 2 ways, for example, as 17406052624 + 3895008100 = 131932^2 + 62410^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21301060693 and 21301060702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21301060723) 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 3 ways as a sum of consecutive naturals, for example, 156625379 + ... + 156625514.

It is an arithmetic number, because the mean of its divisors is an integer number (3289134387).

Almost surely, 2^21301060724 is an apocalyptic number.

It is an amenable number.

21301060724 is a deficient number, since it is larger than the sum of its proper divisors (18168551920).

21301060724 is a wasteful number, since it uses less digits than its factorization.

21301060724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313250914 (or 313250912 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The spelling of 21301060724 in words is "twenty-one billion, three hundred one million, sixty thousand, seven hundred twenty-four".