1212212202017 has 2 divisors, whose sum is σ = 1212212202018. Its totient is φ = 1212212202016.

The previous prime is 1212212201939. The next prime is 1212212202059. The reversal of 1212212202017 is 7102022122121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1106249582656 + 105962619361 = 1051784^2 + 325519^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212212202017 - 2¹⁰ = 1212212200993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212212201983 and 1212212202001.

It is not a weakly prime, because it can be changed into another prime (1212212202917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606106101008 + 606106101009.

It is an arithmetic number, because the mean of its divisors is an integer number (606106101009).

Almost surely, 2^{1212212202017} is an apocalyptic number.

It is an amenable number.

1212212202017 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212212202017 is an equidigital number, since it uses as much as digits as its factorization.

1212212202017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 448, while the sum is 23.

Adding to 1212212202017 its reverse (7102022122121), we get a palindrome (8314234324138).

The spelling of 1212212202017 in words is "one trillion, two hundred twelve billion, two hundred twelve million, two hundred two thousand, seventeen".