1212112232017 has 2 divisors, whose sum is σ = 1212112232018. Its totient is φ = 1212112232016.

The previous prime is 1212112231963. The next prime is 1212112232039. The reversal of 1212112232017 is 7102322112121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783465738496 + 428646493521 = 885136^2 + 654711^2 .

It is an emirp because it is prime and its reverse (7102322112121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1212112232017 - 2²³ = 1212103843409 is a prime.

It is a super-3 number, since 3×1212112232017³ (a number of 37 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1212112231982 and 1212112232000.

It is not a weakly prime, because it can be changed into another prime (1212112232087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606056116008 + 606056116009.

It is an arithmetic number, because the mean of its divisors is an integer number (606056116009).

Almost surely, 2^{1212112232017} is an apocalyptic number.

It is an amenable number.

1212112232017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212112232017 is an equidigital number, since it uses as much as digits as its factorization.

1212112232017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 1212112232017 its reverse (7102322112121), we get a palindrome (8314434344138).

The spelling of 1212112232017 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred thirty-two thousand, seventeen".