201020021011057 has 2 divisors, whose sum is σ = 201020021011058. Its totient is φ = 201020021011056.

The previous prime is 201020021011031. The next prime is 201020021011109. The reversal of 201020021011057 is 750110120020102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164239628991201 + 36780392019856 = 12815601^2 + 6064684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020021011057 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020021011027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510010505528 + 100510010505529.

It is an arithmetic number, because the mean of its divisors is an integer number (100510010505529).

Almost surely, 2^{201020021011057} is an apocalyptic number.

It is an amenable number.

201020021011057 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020021011057 is an equidigital number, since it uses as much as digits as its factorization.

201020021011057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 22.

Adding to 201020021011057 its reverse (750110120020102), we get a palindrome (951130141031159).

The spelling of 201020021011057 in words is "two hundred one trillion, twenty billion, twenty-one million, eleven thousand, fifty-seven".