10221230221 has 2 divisors, whose sum is σ = 10221230222. Its totient is φ = 10221230220.

The previous prime is 10221230207. The next prime is 10221230231. The reversal of 10221230221 is 12203212201.

It is a happy number.

10221230221 is digitally balanced in base 3, 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., 9626553225 + 594676996 = 98115^2 + 24386^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221230221 - 2⁹ = 10221229709 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10221230195 and 10221230204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221230231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110615110 + 5110615111.

It is an arithmetic number, because the mean of its divisors is an integer number (5110615111).

Almost surely, 2^10221230221 is an apocalyptic number.

It is an amenable number.

10221230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221230221 is an equidigital number, since it uses as much as digits as its factorization.

10221230221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 10221230221 its reverse (12203212201), we get a palindrome (22424442422).

The spelling of 10221230221 in words is "ten billion, two hundred twenty-one million, two hundred thirty thousand, two hundred twenty-one".