1201111100017 has 2 divisors, whose sum is σ = 1201111100018. Its totient is φ = 1201111100016.

The previous prime is 1201111099999. The next prime is 1201111100047. The reversal of 1201111100017 is 7100011111021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1106375800336 + 94735299681 = 1051844^2 + 307791^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201111100017 - 2³⁵ = 1166751361649 is a prime.

It is not a weakly prime, because it can be changed into another prime (1201111100047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600555550008 + 600555550009.

It is an arithmetic number, because the mean of its divisors is an integer number (600555550009).

Almost surely, 2^{1201111100017} is an apocalyptic number.

It is an amenable number.

1201111100017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201111100017 is an equidigital number, since it uses as much as digits as its factorization.

1201111100017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 16.

Adding to 1201111100017 its reverse (7100011111021), we get a palindrome (8301122211038).

The spelling of 1201111100017 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred thousand, seventeen".