1331212311097 has 2 divisors, whose sum is σ = 1331212311098. Its totient is φ = 1331212311096.

The previous prime is 1331212311089. The next prime is 1331212311133. The reversal of 1331212311097 is 7901132121331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1331205980841 + 6330256 = 1153779^2 + 2516^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331212311097 - 2³ = 1331212311089 is a prime.

It is not a weakly prime, because it can be changed into another prime (1331212311047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665606155548 + 665606155549.

It is an arithmetic number, because the mean of its divisors is an integer number (665606155549).

Almost surely, 2^{1331212311097} is an apocalyptic number.

It is an amenable number.

1331212311097 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331212311097 is an equidigital number, since it uses as much as digits as its factorization.

1331212311097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 34.

The spelling of 1331212311097 in words is "one trillion, three hundred thirty-one billion, two hundred twelve million, three hundred eleven thousand, ninety-seven".