1212212004617 has 2 divisors, whose sum is σ = 1212212004618. Its totient is φ = 1212212004616.

The previous prime is 1212212004583. The next prime is 1212212004623. The reversal of 1212212004617 is 7164002122121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1195252412176 + 16959592441 = 1093276^2 + 130229^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212212004617 - 2¹² = 1212212000521 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1212212004617.

It is not a weakly prime, because it can be changed into another prime (1212212004217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106002308 + 606106002309.

It is an arithmetic number, because the mean of its divisors is an integer number (606106002309).

Almost surely, 2^{1212212004617} is an apocalyptic number.

It is an amenable number.

1212212004617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212212004617 is an equidigital number, since it uses as much as digits as its factorization.

1212212004617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 29.

Adding to 1212212004617 its reverse (7164002122121), we get a palindrome (8376214126738).

The spelling of 1212212004617 in words is "one trillion, two hundred twelve billion, two hundred twelve million, four thousand, six hundred seventeen".