10212030221 has 2 divisors, whose sum is σ = 10212030222. Its totient is φ = 10212030220.

The previous prime is 10212030131. The next prime is 10212030223. The reversal of 10212030221 is 12203021201.

It is a happy number.

10212030221 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., 6091802500 + 4120227721 = 78050^2 + 64189^2 .

It is a cyclic number.

It is not a de Polignac number, because 10212030221 - 2¹⁰ = 10212029197 is a prime.

It is a super-2 number, since 2×10212030221² (a number of 21 digits) contains 22 as substring.

Together with 10212030223, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212030196 and 10212030205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10212030223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5106015110 + 5106015111.

It is an arithmetic number, because the mean of its divisors is an integer number (5106015111).

Almost surely, 2^10212030221 is an apocalyptic number.

It is an amenable number.

10212030221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10212030221 is an equidigital number, since it uses as much as digits as its factorization.

10212030221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10212030221 its reverse (12203021201), we get a palindrome (22415051422).

The spelling of 10212030221 in words is "ten billion, two hundred twelve million, thirty thousand, two hundred twenty-one".