110221220212217 has 2 divisors, whose sum is σ = 110221220212218. Its totient is φ = 110221220212216.

The previous prime is 110221220212177. The next prime is 110221220212219. The reversal of 110221220212217 is 712212022122011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101425363272256 + 8795856939961 = 10071016^2 + 2965781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-110221220212217 is a prime.

Together with 110221220212219, 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 (110221220212219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55110610106108 + 55110610106109.

It is an arithmetic number, because the mean of its divisors is an integer number (55110610106109).

Almost surely, 2^{110221220212217} is an apocalyptic number.

It is an amenable number.

110221220212217 is a deficient number, since it is larger than the sum of its proper divisors (1).

110221220212217 is an equidigital number, since it uses as much as digits as its factorization.

110221220212217 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 26.

Adding to 110221220212217 its reverse (712212022122011), we get a palindrome (822433242334228).

The spelling of 110221220212217 in words is "one hundred ten trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, two hundred seventeen".