21302003421113 has 2 divisors, whose sum is σ = 21302003421114. Its totient is φ = 21302003421112.

The previous prime is 21302003421089. The next prime is 21302003421119. The reversal of 21302003421113 is 31112430020312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19626565715344 + 1675437705769 = 4430188^2 + 1294387^2 .

It is a cyclic number.

It is not a de Polignac number, because 21302003421113 - 2³⁸ = 21027125514169 is a prime.

It is not a weakly prime, because it can be changed into another prime (21302003421119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651001710556 + 10651001710557.

It is an arithmetic number, because the mean of its divisors is an integer number (10651001710557).

Almost surely, 2^{21302003421113} is an apocalyptic number.

It is an amenable number.

21302003421113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302003421113 is an equidigital number, since it uses as much as digits as its factorization.

21302003421113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 21302003421113 its reverse (31112430020312), we get a palindrome (52414433441425).

The spelling of 21302003421113 in words is "twenty-one trillion, three hundred two billion, three million, four hundred twenty-one thousand, one hundred thirteen".