210224244281 has 2 divisors, whose sum is σ = 210224244282. Its totient is φ = 210224244280.

The previous prime is 210224244211. The next prime is 210224244283. The reversal of 210224244281 is 182442422012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197232803881 + 12991440400 = 444109^2 + 113980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210224244281 is a prime.

It is a super-2 number, since 2×210224244281² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 210224244283, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (210224244283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105112122140 + 105112122141.

It is an arithmetic number, because the mean of its divisors is an integer number (105112122141).

Almost surely, 2^210224244281 is an apocalyptic number.

It is an amenable number.

210224244281 is a deficient number, since it is larger than the sum of its proper divisors (1).

210224244281 is an equidigital number, since it uses as much as digits as its factorization.

210224244281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 210224244281 its reverse (182442422012), we get a palindrome (392666666293).

The spelling of 210224244281 in words is "two hundred ten billion, two hundred twenty-four million, two hundred forty-four thousand, two hundred eighty-one".