220020210001217 has 2 divisors, whose sum is σ = 220020210001218. Its totient is φ = 220020210001216.

The previous prime is 220020210001127. The next prime is 220020210001219. The reversal of 220020210001217 is 712100012020022.

Together with previous prime (220020210001127) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129710141009296 + 90310068991921 = 11389036^2 + 9503161^2 .

It is a cyclic number.

It is not a de Polignac number, because 220020210001217 - 2³² = 220015915033921 is a prime.

It is a super-2 number, since 2×220020210001217² (a number of 29 digits) contains 22 as substring.

Together with 220020210001219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (220020210001219) 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, 110010105000608 + 110010105000609.

It is an arithmetic number, because the mean of its divisors is an integer number (110010105000609).

Almost surely, 2^{220020210001217} is an apocalyptic number.

It is an amenable number.

220020210001217 is a deficient number, since it is larger than the sum of its proper divisors (1).

220020210001217 is an equidigital number, since it uses as much as digits as its factorization.

220020210001217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 220020210001217 its reverse (712100012020022), we get a palindrome (932120222021239).

The spelling of 220020210001217 in words is "two hundred twenty trillion, twenty billion, two hundred ten million, one thousand, two hundred seventeen".