22100220221 has 2 divisors, whose sum is σ = 22100220222. Its totient is φ = 22100220220.

The previous prime is 22100220113. The next prime is 22100220257. The reversal of 22100220221 is 12202200122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21899856196 + 200364025 = 147986^2 + 14155^2 .

It is a cyclic number.

It is not a de Polignac number, because 22100220221 - 2¹⁸ = 22099958077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22100220196 and 22100220205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22100720221) 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, 11050110110 + 11050110111.

It is an arithmetic number, because the mean of its divisors is an integer number (11050110111).

Almost surely, 2^22100220221 is an apocalyptic number.

It is an amenable number.

22100220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

22100220221 is an equidigital number, since it uses as much as digits as its factorization.

22100220221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22100220221 its reverse (12202200122), we get a palindrome (34302420343).

The spelling of 22100220221 in words is "twenty-two billion, one hundred million, two hundred twenty thousand, two hundred twenty-one".