100222021212217 has 2 divisors, whose sum is σ = 100222021212218. Its totient is φ = 100222021212216.

The previous prime is 100222021212199. The next prime is 100222021212251. The reversal of 100222021212217 is 712212120222001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55099310797881 + 45122710414336 = 7422891^2 + 6717344^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100222021212217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100222021212191 and 100222021212200.

It is not a weakly prime, because it can be changed into another prime (100222021212277) 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, 50111010606108 + 50111010606109.

It is an arithmetic number, because the mean of its divisors is an integer number (50111010606109).

Almost surely, 2^{100222021212217} is an apocalyptic number.

It is an amenable number.

100222021212217 is a deficient number, since it is larger than the sum of its proper divisors (1).

100222021212217 is an equidigital number, since it uses as much as digits as its factorization.

100222021212217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 25.

Adding to 100222021212217 its reverse (712212120222001), we get a palindrome (812434141434218).

The spelling of 100222021212217 in words is "one hundred trillion, two hundred twenty-two billion, twenty-one million, two hundred twelve thousand, two hundred seventeen".