21202310211353 has 2 divisors, whose sum is σ = 21202310211354. Its totient is φ = 21202310211352.

The previous prime is 21202310211311. The next prime is 21202310211419. The reversal of 21202310211353 is 35311201320212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20403767804809 + 798542406544 = 4517053^2 + 893612^2 .

It is a cyclic number.

It is not a de Polignac number, because 21202310211353 - 2¹⁴ = 21202310194969 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (21202310211553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10601155105676 + 10601155105677.

It is an arithmetic number, because the mean of its divisors is an integer number (10601155105677).

Almost surely, 2^{21202310211353} is an apocalyptic number.

It is an amenable number.

21202310211353 is a deficient number, since it is larger than the sum of its proper divisors (1).

21202310211353 is an equidigital number, since it uses as much as digits as its factorization.

21202310211353 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 26.

Adding to 21202310211353 its reverse (35311201320212), we get a palindrome (56513511531565).

The spelling of 21202310211353 in words is "twenty-one trillion, two hundred two billion, three hundred ten million, two hundred eleven thousand, three hundred fifty-three".