211001000281 has 2 divisors, whose sum is σ = 211001000282. Its totient is φ = 211001000280.

The previous prime is 211001000279. The next prime is 211001000291. The reversal of 211001000281 is 182000100112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206312174656 + 4688825625 = 454216^2 + 68475^2 .

It is a cyclic number.

It is not a de Polignac number, because 211001000281 - 2¹ = 211001000279 is a prime.

It is a super-2 number, since 2×211001000281² (a number of 23 digits) contains 22 as substring.

Together with 211001000279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (211001000291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105500500140 + 105500500141.

It is an arithmetic number, because the mean of its divisors is an integer number (105500500141).

Almost surely, 2^211001000281 is an apocalyptic number.

It is an amenable number.

211001000281 is a deficient number, since it is larger than the sum of its proper divisors (1).

211001000281 is an equidigital number, since it uses as much as digits as its factorization.

211001000281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 211001000281 its reverse (182000100112), we get a palindrome (393001100393).

The spelling of 211001000281 in words is "two hundred eleven billion, one million, two hundred eighty-one", and thus it is an aban number.