211300223021 has 2 divisors, whose sum is σ = 211300223022. Its totient is φ = 211300223020.

The previous prime is 211300223003. The next prime is 211300223027. The reversal of 211300223021 is 120322003112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166827318025 + 44472904996 = 408445^2 + 210886^2 .

It is a cyclic number.

It is not a de Polignac number, because 211300223021 - 2³⁰ = 210226481197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211300223027) 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, 105650111510 + 105650111511.

It is an arithmetic number, because the mean of its divisors is an integer number (105650111511).

Almost surely, 2^211300223021 is an apocalyptic number.

It is an amenable number.

211300223021 is a deficient number, since it is larger than the sum of its proper divisors (1).

211300223021 is an equidigital number, since it uses as much as digits as its factorization.

211300223021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 211300223021 its reverse (120322003112), we get a palindrome (331622226133).

The spelling of 211300223021 in words is "two hundred eleven billion, three hundred million, two hundred twenty-three thousand, twenty-one".