100212022221217 has 2 divisors, whose sum is σ = 100212022221218. Its totient is φ = 100212022221216.

The previous prime is 100212022221187. The next prime is 100212022221229. The reversal of 100212022221217 is 712122220212001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78276203643456 + 21935818577761 = 8847384^2 + 4683569^2 .

It is a cyclic number.

It is not a de Polignac number, because 100212022221217 - 2⁴³ = 91415929199009 is a prime.

It is a super-2 number, since 2×100212022221217² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100212022221191 and 100212022221200.

It is not a weakly prime, because it can be changed into another prime (100212022821217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50106011110608 + 50106011110609.

It is an arithmetic number, because the mean of its divisors is an integer number (50106011110609).

Almost surely, 2^{100212022221217} is an apocalyptic number.

It is an amenable number.

100212022221217 is a deficient number, since it is larger than the sum of its proper divisors (1).

100212022221217 is an equidigital number, since it uses as much as digits as its factorization.

100212022221217 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 100212022221217 its reverse (712122220212001), we get a palindrome (812334242433218).

The spelling of 100212022221217 in words is "one hundred trillion, two hundred twelve billion, twenty-two million, two hundred twenty-one thousand, two hundred seventeen".