1211110321297 has 2 divisors, whose sum is σ = 1211110321298. Its totient is φ = 1211110321296.

The previous prime is 1211110321271. The next prime is 1211110321307. The reversal of 1211110321297 is 7921230111121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1172609602641 + 38500718656 = 1082871^2 + 196216^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211110321297 - 2¹¹ = 1211110319249 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211110321697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605555160648 + 605555160649.

It is an arithmetic number, because the mean of its divisors is an integer number (605555160649).

Almost surely, 2^{1211110321297} is an apocalyptic number.

It is an amenable number.

1211110321297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211110321297 is an equidigital number, since it uses as much as digits as its factorization.

1211110321297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 31.

The spelling of 1211110321297 in words is "one trillion, two hundred eleven billion, one hundred ten million, three hundred twenty-one thousand, two hundred ninety-seven".