1220112010217 has 2 divisors, whose sum is σ = 1220112010218. Its totient is φ = 1220112010216.

The previous prime is 1220112010163. The next prime is 1220112010219. The reversal of 1220112010217 is 7120102110221.

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., 999178168921 + 220933841296 = 999589^2 + 470036^2 .

It is an emirp because it is prime and its reverse (7120102110221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220112010217 - 2¹² = 1220112006121 is a prime.

Together with 1220112010219, 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 (1220112010219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056005108 + 610056005109.

It is an arithmetic number, because the mean of its divisors is an integer number (610056005109).

Almost surely, 2^{1220112010217} is an apocalyptic number.

It is an amenable number.

1220112010217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112010217 is an equidigital number, since it uses as much as digits as its factorization.

1220112010217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 1220112010217 its reverse (7120102110221), we get a palindrome (8340214120438).

The spelling of 1220112010217 in words is "one trillion, two hundred twenty billion, one hundred twelve million, ten thousand, two hundred seventeen".