21102301313 has 2 divisors, whose sum is σ = 21102301314. Its totient is φ = 21102301312.

The previous prime is 21102301217. The next prime is 21102301321. The reversal of 21102301313 is 31310320112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18018498289 + 3083803024 = 134233^2 + 55532^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21102301313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21102301291 and 21102301300.

It is not a weakly prime, because it can be changed into another prime (21102301343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551150656 + 10551150657.

It is an arithmetic number, because the mean of its divisors is an integer number (10551150657).

Almost surely, 2^21102301313 is an apocalyptic number.

It is an amenable number.

21102301313 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102301313 is an equidigital number, since it uses as much as digits as its factorization.

21102301313 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 21102301313 its reverse (31310320112), we get a palindrome (52412621425).

The spelling of 21102301313 in words is "twenty-one billion, one hundred two million, three hundred one thousand, three hundred thirteen".