2012111220017 has 2 divisors, whose sum is σ = 2012111220018. Its totient is φ = 2012111220016.

The previous prime is 2012111219897. The next prime is 2012111220043. The reversal of 2012111220017 is 7100221112102.

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., 1265769004096 + 746342215921 = 1125064^2 + 863911^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012111220017 - 2¹² = 2012111215921 is a prime.

It is not a weakly prime, because it can be changed into another prime (2012111240017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006055610008 + 1006055610009.

It is an arithmetic number, because the mean of its divisors is an integer number (1006055610009).

Almost surely, 2^{2012111220017} is an apocalyptic number.

It is an amenable number.

2012111220017 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012111220017 is an equidigital number, since it uses as much as digits as its factorization.

2012111220017 is an evil number, because the sum of its binary digits is even.

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

Adding to 2012111220017 its reverse (7100221112102), we get a palindrome (9112332332119).

The spelling of 2012111220017 in words is "two trillion, twelve billion, one hundred eleven million, two hundred twenty thousand, seventeen".