21301210202353 has 2 divisors, whose sum is σ = 21301210202354. Its totient is φ = 21301210202352.

The previous prime is 21301210202351. The next prime is 21301210202359. The reversal of 21301210202353 is 35320201210312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12342131580769 + 8959078621584 = 3513137^2 + 2993172^2 .

It is a cyclic number.

It is not a de Polignac number, because 21301210202353 - 2¹ = 21301210202351 is a prime.

Together with 21301210202351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (21301210202351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650605101176 + 10650605101177.

It is an arithmetic number, because the mean of its divisors is an integer number (10650605101177).

Almost surely, 2^{21301210202353} is an apocalyptic number.

It is an amenable number.

21301210202353 is a deficient number, since it is larger than the sum of its proper divisors (1).

21301210202353 is an equidigital number, since it uses as much as digits as its factorization.

21301210202353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 21301210202353 its reverse (35320201210312), we get a palindrome (56621411412665).

The spelling of 21301210202353 in words is "twenty-one trillion, three hundred one billion, two hundred ten million, two hundred two thousand, three hundred fifty-three".