10061221 has 2 divisors, whose sum is σ = 10061222. Its totient is φ = 10061220.

The previous prime is 10061213. The next prime is 10061257. The reversal of 10061221 is 12216001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10048900 + 12321 = 3170^2 + 111^2 .

It is a cyclic number.

It is not a de Polignac number, because 10061221 - 2³ = 10061213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10061201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5030610 + 5030611.

It is an arithmetic number, because the mean of its divisors is an integer number (5030611).

Almost surely, 2^10061221 is an apocalyptic number.

It is an amenable number.

10061221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10061221 is an equidigital number, since it uses as much as digits as its factorization.

10061221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 10061221 is about 3171.9427800640. The cubic root of 10061221 is about 215.8822303246.

Adding to 10061221 its reverse (12216001), we get a palindrome (22277222).

The spelling of 10061221 in words is "ten million, sixty-one thousand, two hundred twenty-one".