1217375114321 has 2 divisors, whose sum is σ = 1217375114322. Its totient is φ = 1217375114320.

The previous prime is 1217375114299. The next prime is 1217375114323. The reversal of 1217375114321 is 1234115737121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 991141704721 + 226233409600 = 995561^2 + 475640^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217375114321 - 2⁶ = 1217375114257 is a prime.

Together with 1217375114323, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1217375114323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608687557160 + 608687557161.

It is an arithmetic number, because the mean of its divisors is an integer number (608687557161).

Almost surely, 2^{1217375114321} is an apocalyptic number.

It is an amenable number.

1217375114321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217375114321 is an equidigital number, since it uses as much as digits as its factorization.

1217375114321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 35280, while the sum is 38.

The spelling of 1217375114321 in words is "one trillion, two hundred seventeen billion, three hundred seventy-five million, one hundred fourteen thousand, three hundred twenty-one".