220120102217 has 2 divisors, whose sum is σ = 220120102218. Its totient is φ = 220120102216.

The previous prime is 220120102199. The next prime is 220120102249. The reversal of 220120102217 is 712201021022.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156686138896 + 63433963321 = 395836^2 + 251861^2 .

It is a cyclic number.

It is not a de Polignac number, because 220120102217 - 2⁸ = 220120101961 is a prime.

It is not a weakly prime, because it can be changed into another prime (220120102297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110060051108 + 110060051109.

It is an arithmetic number, because the mean of its divisors is an integer number (110060051109).

Almost surely, 2^220120102217 is an apocalyptic number.

It is an amenable number.

220120102217 is a deficient number, since it is larger than the sum of its proper divisors (1).

220120102217 is an equidigital number, since it uses as much as digits as its factorization.

220120102217 is an evil number, because the sum of its binary digits is even.

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

Adding to 220120102217 its reverse (712201021022), we get a palindrome (932321123239).

The spelling of 220120102217 in words is "two hundred twenty billion, one hundred twenty million, one hundred two thousand, two hundred seventeen".