100222232221 has 2 divisors, whose sum is σ = 100222232222. Its totient is φ = 100222232220.

The previous prime is 100222232207. The next prime is 100222232261. The reversal of 100222232221 is 122232222001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94417925625 + 5804306596 = 307275^2 + 76186^2 .

It is a cyclic number.

It is not a de Polignac number, because 100222232221 - 2¹⁵ = 100222199453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100222232261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50111116110 + 50111116111.

It is an arithmetic number, because the mean of its divisors is an integer number (50111116111).

Almost surely, 2^100222232221 is an apocalyptic number.

It is an amenable number.

100222232221 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222232221 is an equidigital number, since it uses as much as digits as its factorization.

100222232221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 100222232221 its reverse (122232222001), we get a palindrome (222454454222).

The spelling of 100222232221 in words is "one hundred billion, two hundred twenty-two million, two hundred thirty-two thousand, two hundred twenty-one".