10202281 has 2 divisors, whose sum is σ = 10202282. Its totient is φ = 10202280.

The previous prime is 10202279. The next prime is 10202293. The reversal of 10202281 is 18220201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9865881 + 336400 = 3141^2 + 580^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202281 - 2¹ = 10202279 is a prime.

It is a super-2 number, since 2×10202281² = 208173075205922, which contains 22 as substring.

Together with 10202279, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10202251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5101140 + 5101141.

It is an arithmetic number, because the mean of its divisors is an integer number (5101141).

Almost surely, 2^10202281 is an apocalyptic number.

It is an amenable number.

10202281 is a deficient number, since it is larger than the sum of its proper divisors (1).

10202281 is an equidigital number, since it uses as much as digits as its factorization.

10202281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 10202281 is about 3194.1009689739. The cubic root of 10202281 is about 216.8864533701.

Adding to 10202281 its reverse (18220201), we get a palindrome (28422482).

The spelling of 10202281 in words is "ten million, two hundred two thousand, two hundred eighty-one".