57201071021 has 2 divisors, whose sum is σ = 57201071022. Its totient is φ = 57201071020.

The previous prime is 57201070981. The next prime is 57201071029. The reversal of 57201071021 is 12017010275.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 53459913796 + 3741157225 = 231214^2 + 61165^2 .

It is a cyclic number.

It is not a de Polignac number, because 57201071021 - 2⁶ = 57201070957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57201071029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28600535510 + 28600535511.

It is an arithmetic number, because the mean of its divisors is an integer number (28600535511).

Almost surely, 2^57201071021 is an apocalyptic number.

It is an amenable number.

57201071021 is a deficient number, since it is larger than the sum of its proper divisors (1).

57201071021 is an equidigital number, since it uses as much as digits as its factorization.

57201071021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 980, while the sum is 26.

Adding to 57201071021 its reverse (12017010275), we get a palindrome (69218081296).

The spelling of 57201071021 in words is "fifty-seven billion, two hundred one million, seventy-one thousand, twenty-one".