1021021020497 has 2 divisors, whose sum is σ = 1021021020498. Its totient is φ = 1021021020496.

The previous prime is 1021021020491. The next prime is 1021021020499. The reversal of 1021021020497 is 7940201201201.

1021021020497 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005575750656 + 15445269841 = 1002784^2 + 124279^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021021020497 - 2¹² = 1021021016401 is a prime.

Together with 1021021020499, 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 (1021021020491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510510510248 + 510510510249.

It is an arithmetic number, because the mean of its divisors is an integer number (510510510249).

Almost surely, 2^{1021021020497} is an apocalyptic number.

It is an amenable number.

1021021020497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021021020497 is an equidigital number, since it uses as much as digits as its factorization.

1021021020497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 1021021020497 its reverse (7940201201201), we get a palindrome (8961222221698).

The spelling of 1021021020497 in words is "one trillion, twenty-one billion, twenty-one million, twenty thousand, four hundred ninety-seven".