10103221 has 2 divisors, whose sum is σ = 10103222. Its totient is φ = 10103220.

The previous prime is 10103147. The next prime is 10103227. The reversal of 10103221 is 12230101.

10103221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6320196 + 3783025 = 2514^2 + 1945^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10103221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10103198 and 10103207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10103227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5051610 + 5051611.

It is an arithmetic number, because the mean of its divisors is an integer number (5051611).

Almost surely, 2^10103221 is an apocalyptic number.

It is an amenable number.

10103221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10103221 is an equidigital number, since it uses as much as digits as its factorization.

10103221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 10103221 is about 3178.5564333515. The cubic root of 10103221 is about 216.1822093635.

Adding to 10103221 its reverse (12230101), we get a palindrome (22333322).

The spelling of 10103221 in words is "ten million, one hundred three thousand, two hundred twenty-one".