21302013113 has 2 divisors, whose sum is σ = 21302013114. Its totient is φ = 21302013112.

The previous prime is 21302013101. The next prime is 21302013137. The reversal of 21302013113 is 31131020312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19118039824 + 2183973289 = 138268^2 + 46733^2 .

It is a cyclic number.

It is not a de Polignac number, because 21302013113 - 2⁸ = 21302012857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21302013091 and 21302013100.

It is not a weakly prime, because it can be changed into another prime (21302013193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651006556 + 10651006557.

It is an arithmetic number, because the mean of its divisors is an integer number (10651006557).

Almost surely, 2^21302013113 is an apocalyptic number.

It is an amenable number.

21302013113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302013113 is an equidigital number, since it uses as much as digits as its factorization.

21302013113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21302013113 its reverse (31131020312), we get a palindrome (52433033425).

The spelling of 21302013113 in words is "twenty-one billion, three hundred two million, thirteen thousand, one hundred thirteen".