1020020322457 has 2 divisors, whose sum is σ = 1020020322458. Its totient is φ = 1020020322456.

The previous prime is 1020020322437. The next prime is 1020020322467. The reversal of 1020020322457 is 7542230200201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1017618930441 + 2401392016 = 1008771^2 + 49004^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020020322457 - 2¹⁹ = 1020019798169 is a prime.

It is not a weakly prime, because it can be changed into another prime (1020020322437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510010161228 + 510010161229.

It is an arithmetic number, because the mean of its divisors is an integer number (510010161229).

Almost surely, 2^{1020020322457} is an apocalyptic number.

It is an amenable number.

1020020322457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020020322457 is an equidigital number, since it uses as much as digits as its factorization.

1020020322457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 28.

Adding to 1020020322457 its reverse (7542230200201), we get a palindrome (8562250522658).

The spelling of 1020020322457 in words is "one trillion, twenty billion, twenty million, three hundred twenty-two thousand, four hundred fifty-seven".