1020204521293 has 2 divisors, whose sum is σ = 1020204521294. Its totient is φ = 1020204521292.

The previous prime is 1020204521269. The next prime is 1020204521299. The reversal of 1020204521293 is 3921254020201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 911648768809 + 108555752484 = 954803^2 + 329478^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020204521293 - 2¹⁷ = 1020204390221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1020204521299) 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, 510102260646 + 510102260647.

It is an arithmetic number, because the mean of its divisors is an integer number (510102260647).

Almost surely, 2^{1020204521293} is an apocalyptic number.

It is an amenable number.

1020204521293 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020204521293 is an equidigital number, since it uses as much as digits as its factorization.

1020204521293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 1020204521293 its reverse (3921254020201), we get a palindrome (4941458541494).

The spelling of 1020204521293 in words is "one trillion, twenty billion, two hundred four million, five hundred twenty-one thousand, two hundred ninety-three".