1021021100573 has 2 divisors, whose sum is σ = 1021021100574. Its totient is φ = 1021021100572.

The previous prime is 1021021100413. The next prime is 1021021100623. The reversal of 1021021100573 is 3750011201201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 848200476484 + 172820624089 = 920978^2 + 415717^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021021100573 - 2¹⁴ = 1021021084189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021021100173) 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, 510510550286 + 510510550287.

It is an arithmetic number, because the mean of its divisors is an integer number (510510550287).

Almost surely, 2^{1021021100573} is an apocalyptic number.

It is an amenable number.

1021021100573 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021021100573 is an equidigital number, since it uses as much as digits as its factorization.

1021021100573 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 420, while the sum is 23.

Adding to 1021021100573 its reverse (3750011201201), we get a palindrome (4771032301774).

The spelling of 1021021100573 in words is "one trillion, twenty-one billion, twenty-one million, one hundred thousand, five hundred seventy-three".