21300310153 has 2 divisors, whose sum is σ = 21300310154. Its totient is φ = 21300310152.

The previous prime is 21300310151. The next prime is 21300310177. The reversal of 21300310153 is 35101300312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21183929209 + 116380944 = 145547^2 + 10788^2 .

It is a cyclic number.

It is not a de Polignac number, because 21300310153 - 2¹ = 21300310151 is a prime.

It is a super-2 number, since 2×21300310153² (a number of 21 digits) contains 22 as substring.

Together with 21300310151, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21300310153.

It is not a weakly prime, because it can be changed into another prime (21300310151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10650155076 + 10650155077.

It is an arithmetic number, because the mean of its divisors is an integer number (10650155077).

Almost surely, 2^21300310153 is an apocalyptic number.

It is an amenable number.

21300310153 is a deficient number, since it is larger than the sum of its proper divisors (1).

21300310153 is an equidigital number, since it uses as much as digits as its factorization.

21300310153 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

Adding to 21300310153 its reverse (35101300312), we get a palindrome (56401610465).

The spelling of 21300310153 in words is "twenty-one billion, three hundred million, three hundred ten thousand, one hundred fifty-three".