10221222110221 has 2 divisors, whose sum is σ = 10221222110222. Its totient is φ = 10221222110220.

The previous prime is 10221222110201. The next prime is 10221222110233. The reversal of 10221222110221 is 12201122212201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10214505488196 + 6716622025 = 3196014^2 + 81955^2 .

It is a cyclic number.

It is not a de Polignac number, because 10221222110221 - 2¹³ = 10221222102029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10221222110201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5110611055110 + 5110611055111.

It is an arithmetic number, because the mean of its divisors is an integer number (5110611055111).

Almost surely, 2^{10221222110221} is an apocalyptic number.

It is an amenable number.

10221222110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

10221222110221 is an equidigital number, since it uses as much as digits as its factorization.

10221222110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10221222110221 its reverse (12201122212201), we get a palindrome (22422344322422).

The spelling of 10221222110221 in words is "ten trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, two hundred twenty-one".