1217183086061 has 2 divisors, whose sum is σ = 1217183086062. Its totient is φ = 1217183086060.

The previous prime is 1217183086057. The next prime is 1217183086103. The reversal of 1217183086061 is 1606803817121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1018093108036 + 199089978025 = 1009006^2 + 446195^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217183086061 - 2² = 1217183086057 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217183086051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608591543030 + 608591543031.

It is an arithmetic number, because the mean of its divisors is an integer number (608591543031).

Almost surely, 2^{1217183086061} is an apocalyptic number.

It is an amenable number.

1217183086061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217183086061 is an equidigital number, since it uses as much as digits as its factorization.

1217183086061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 44.

The spelling of 1217183086061 in words is "one trillion, two hundred seventeen billion, one hundred eighty-three million, eighty-six thousand, sixty-one".