1020203123297 has 2 divisors, whose sum is σ = 1020203123298. Its totient is φ = 1020203123296.

The previous prime is 1020203123221. The next prime is 1020203123309. The reversal of 1020203123297 is 7923213020201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 790834925521 + 229368197776 = 889289^2 + 478924^2 .

It is an emirp because it is prime and its reverse (7923213020201) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020203123297 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020203126297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510101561648 + 510101561649.

It is an arithmetic number, because the mean of its divisors is an integer number (510101561649).

Almost surely, 2^{1020203123297} is an apocalyptic number.

It is an amenable number.

1020203123297 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020203123297 is an equidigital number, since it uses as much as digits as its factorization.

1020203123297 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

Adding to 1020203123297 its reverse (7923213020201), we get a palindrome (8943416143498).

The spelling of 1020203123297 in words is "one trillion, twenty billion, two hundred three million, one hundred twenty-three thousand, two hundred ninety-seven".