21112003310053 has 2 divisors, whose sum is σ = 21112003310054. Its totient is φ = 21112003310052.

The previous prime is 21112003310051. The next prime is 21112003310063. The reversal of 21112003310053 is 35001330021112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12837043425924 + 8274959884129 = 3582882^2 + 2876623^2 .

It is a cyclic number.

It is not a de Polignac number, because 21112003310053 - 2¹ = 21112003310051 is a prime.

Together with 21112003310051, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21112003310051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10556001655026 + 10556001655027.

It is an arithmetic number, because the mean of its divisors is an integer number (10556001655027).

Almost surely, 2^{21112003310053} is an apocalyptic number.

It is an amenable number.

21112003310053 is a deficient number, since it is larger than the sum of its proper divisors (1).

21112003310053 is an equidigital number, since it uses as much as digits as its factorization.

21112003310053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 22.

Adding to 21112003310053 its reverse (35001330021112), we get a palindrome (56113333331165).

The spelling of 21112003310053 in words is "twenty-one trillion, one hundred twelve billion, three million, three hundred ten thousand, fifty-three".