100000221193 has 2 divisors, whose sum is σ = 100000221194. Its totient is φ = 100000221192.

The previous prime is 100000221179. The next prime is 100000221221. The reversal of 100000221193 is 391122000001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74396381049 + 25603840144 = 272757^2 + 160012^2 .

It is a cyclic number.

It is not a de Polignac number, because 100000221193 - 2⁵ = 100000221161 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100000221193.

It is not a weakly prime, because it can be changed into another prime (100000221143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50000110596 + 50000110597.

It is an arithmetic number, because the mean of its divisors is an integer number (50000110597).

Almost surely, 2^100000221193 is an apocalyptic number.

It is an amenable number.

100000221193 is a deficient number, since it is larger than the sum of its proper divisors (1).

100000221193 is an equidigital number, since it uses as much as digits as its factorization.

100000221193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 100000221193 its reverse (391122000001), we get a palindrome (491122221194).

The spelling of 100000221193 in words is "one hundred billion, two hundred twenty-one thousand, one hundred ninety-three".