100221212297 has 2 divisors, whose sum is σ = 100221212298. Its totient is φ = 100221212296.

The previous prime is 100221212249. The next prime is 100221212381. The reversal of 100221212297 is 792212122001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91508670016 + 8712542281 = 302504^2 + 93341^2 .

It is an emirp because it is prime and its reverse (792212122001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100221212297 - 2⁶ = 100221212233 is a prime.

It is not a weakly prime, because it can be changed into another prime (100221212227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110606148 + 50110606149.

It is an arithmetic number, because the mean of its divisors is an integer number (50110606149).

Almost surely, 2^100221212297 is an apocalyptic number.

It is an amenable number.

100221212297 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221212297 is an equidigital number, since it uses as much as digits as its factorization.

100221212297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 100221212297 its reverse (792212122001), we get a palindrome (892433334298).

The spelling of 100221212297 in words is "one hundred billion, two hundred twenty-one million, two hundred twelve thousand, two hundred ninety-seven".