111010101220217 has 2 divisors, whose sum is σ = 111010101220218. Its totient is φ = 111010101220216.

The previous prime is 111010101220211. The next prime is 111010101220219. The reversal of 111010101220217 is 712022101010111.

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., 102922425014761 + 8087676205456 = 10145069^2 + 2843884^2 .

It is a cyclic number.

It is not a de Polignac number, because 111010101220217 - 2¹² = 111010101216121 is a prime.

Together with 111010101220219, 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 (111010101220211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55505050610108 + 55505050610109.

It is an arithmetic number, because the mean of its divisors is an integer number (55505050610109).

Almost surely, 2^{111010101220217} is an apocalyptic number.

It is an amenable number.

111010101220217 is a deficient number, since it is larger than the sum of its proper divisors (1).

111010101220217 is an equidigital number, since it uses as much as digits as its factorization.

111010101220217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 111010101220217 its reverse (712022101010111), we get a palindrome (823032202230328).

The spelling of 111010101220217 in words is "one hundred eleven trillion, ten billion, one hundred one million, two hundred twenty thousand, two hundred seventeen".