10271221 has 2 divisors, whose sum is σ = 10271222. Its totient is φ = 10271220.

The previous prime is 10271203. The next prime is 10271231. The reversal of 10271221 is 12217201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9678321 + 592900 = 3111^2 + 770^2 .

It is a cyclic number.

It is not a de Polignac number, because 10271221 - 2⁵ = 10271189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10271195 and 10271204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10271231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5135610 + 5135611.

It is an arithmetic number, because the mean of its divisors is an integer number (5135611).

Almost surely, 2^10271221 is an apocalyptic number.

It is an amenable number.

10271221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10271221 is an equidigital number, since it uses as much as digits as its factorization.

10271221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 10271221 is about 3204.8745685284. The cubic root of 10271221 is about 217.3738802887.

Adding to 10271221 its reverse (12217201), we get a palindrome (22488422).

The spelling of 10271221 in words is "ten million, two hundred seventy-one thousand, two hundred twenty-one".