1021273211297 has 2 divisors, whose sum is σ = 1021273211298. Its totient is φ = 1021273211296.

The previous prime is 1021273211207. The next prime is 1021273211347. The reversal of 1021273211297 is 7921123721201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 907568696896 + 113704514401 = 952664^2 + 337201^2 .

It is an emirp because it is prime and its reverse (7921123721201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1021273211297 - 2⁸ = 1021273211041 is a prime.

It is a super-2 number, since 2×1021273211297² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1021273211297.

It is not a weakly prime, because it can be changed into another prime (1021273211207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510636605648 + 510636605649.

It is an arithmetic number, because the mean of its divisors is an integer number (510636605649).

Almost surely, 2^{1021273211297} is an apocalyptic number.

It is an amenable number.

1021273211297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021273211297 is an equidigital number, since it uses as much as digits as its factorization.

1021273211297 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

Adding to 1021273211297 its reverse (7921123721201), we get a palindrome (8942396932498).

The spelling of 1021273211297 in words is "one trillion, twenty-one billion, two hundred seventy-three million, two hundred eleven thousand, two hundred ninety-seven".