1000301021257 has 2 divisors, whose sum is σ = 1000301021258. Its totient is φ = 1000301021256.

The previous prime is 1000301021177. The next prime is 1000301021297. The reversal of 1000301021257 is 7521201030001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 999992000016 + 309021241 = 999996^2 + 17579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000301021257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000301021297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500150510628 + 500150510629.

It is an arithmetic number, because the mean of its divisors is an integer number (500150510629).

Almost surely, 2^{1000301021257} is an apocalyptic number.

It is an amenable number.

1000301021257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000301021257 is an equidigital number, since it uses as much as digits as its factorization.

1000301021257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

Adding to 1000301021257 its reverse (7521201030001), we get a palindrome (8521502051258).

The spelling of 1000301021257 in words is "one trillion, three hundred one million, twenty-one thousand, two hundred fifty-seven".