1220240041217 has 2 divisors, whose sum is σ = 1220240041218. Its totient is φ = 1220240041216.

The previous prime is 1220240041199. The next prime is 1220240041331. The reversal of 1220240041217 is 7121400420221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1219012519921 + 1227521296 = 1104089^2 + 35036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220240041217 - 2³⁸ = 945362134273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220240041417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610120020608 + 610120020609.

It is an arithmetic number, because the mean of its divisors is an integer number (610120020609).

Almost surely, 2^{1220240041217} is an apocalyptic number.

It is an amenable number.

1220240041217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220240041217 is an equidigital number, since it uses as much as digits as its factorization.

1220240041217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1792, while the sum is 26.

Adding to 1220240041217 its reverse (7121400420221), we get a palindrome (8341640461438).

The spelling of 1220240041217 in words is "one trillion, two hundred twenty billion, two hundred forty million, forty-one thousand, two hundred seventeen".