21001200302353 has 2 divisors, whose sum is σ = 21001200302354. Its totient is φ = 21001200302352.

The previous prime is 21001200302293. The next prime is 21001200302371. The reversal of 21001200302353 is 35320300210012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17982756209664 + 3018444092689 = 4240608^2 + 1737367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21001200302353 is a prime.

It is not a weakly prime, because it can be changed into another prime (21001200302393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500600151176 + 10500600151177.

It is an arithmetic number, because the mean of its divisors is an integer number (10500600151177).

Almost surely, 2^{21001200302353} is an apocalyptic number.

It is an amenable number.

21001200302353 is a deficient number, since it is larger than the sum of its proper divisors (1).

21001200302353 is an equidigital number, since it uses as much as digits as its factorization.

21001200302353 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

Adding to 21001200302353 its reverse (35320300210012), we get a palindrome (56321500512365).

The spelling of 21001200302353 in words is "twenty-one trillion, one billion, two hundred million, three hundred two thousand, three hundred fifty-three".