201001021057 has 2 divisors, whose sum is σ = 201001021058. Its totient is φ = 201001021056.

The previous prime is 201001020989. The next prime is 201001021103. The reversal of 201001021057 is 750120100102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118476393616 + 82524627441 = 344204^2 + 287271^2 .

It is a cyclic number.

It is not a de Polignac number, because 201001021057 - 2¹⁹ = 201000496769 is a prime.

It is not a weakly prime, because it can be changed into another prime (201007021057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500510528 + 100500510529.

It is an arithmetic number, because the mean of its divisors is an integer number (100500510529).

Almost surely, 2^201001021057 is an apocalyptic number.

It is an amenable number.

201001021057 is a deficient number, since it is larger than the sum of its proper divisors (1).

201001021057 is an equidigital number, since it uses as much as digits as its factorization.

201001021057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 140, while the sum is 19.

Adding to 201001021057 its reverse (750120100102), we get a palindrome (951121121159).

The spelling of 201001021057 in words is "two hundred one billion, one million, twenty-one thousand, fifty-seven".