100000320221 has 2 divisors, whose sum is σ = 100000320222. Its totient is φ = 100000320220.

The previous prime is 100000320197. The next prime is 100000320223. The reversal of 100000320221 is 122023000001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79701194596 + 20299125625 = 282314^2 + 142475^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000320221 - 2¹⁰ = 100000319197 is a prime.

Together with 100000320223, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100000320223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000160110 + 50000160111.

It is an arithmetic number, because the mean of its divisors is an integer number (50000160111).

Almost surely, 2^100000320221 is an apocalyptic number.

It is an amenable number.

100000320221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000320221 is an equidigital number, since it uses as much as digits as its factorization.

100000320221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 100000320221 its reverse (122023000001), we get a palindrome (222023320222).

The spelling of 100000320221 in words is "one hundred billion, three hundred twenty thousand, two hundred twenty-one".