21302302130 has 8 divisors (see below), whose sum is σ = 38344143852. Its totient is φ = 8520920848.

The previous prime is 21302302129. The next prime is 21302302157. The reversal of 21302302130 is 3120320312.

It can be written as a sum of positive squares in 2 ways, for example, as 21198486409 + 103815721 = 145597^2 + 10189^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21302302099 and 21302302108.

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, 1065115097 + ... + 1065115116.

Almost surely, 2^21302302130 is an apocalyptic number.

21302302130 is a deficient number, since it is larger than the sum of its proper divisors (17041841722).

21302302130 is a wasteful number, since it uses less digits than its factorization.

21302302130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130230220.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21302302130 its reverse (3120320312), we get a palindrome (24422622442).

The spelling of 21302302130 in words is "twenty-one billion, three hundred two million, three hundred two thousand, one hundred thirty".