1021301009 has 2 divisors, whose sum is σ = 1021301010. Its totient is φ = 1021301008.

The previous prime is 1021301003. The next prime is 1021301051. The reversal of 1021301009 is 9001031201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 579124225 + 442176784 = 24065^2 + 21028^2 .

It is a cyclic number.

It is not a de Polignac number, because 1021301009 - 2¹⁶ = 1021235473 is a prime.

It is not a weakly prime, because it can be changed into another prime (1021301003) 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, 510650504 + 510650505.

It is an arithmetic number, because the mean of its divisors is an integer number (510650505).

Almost surely, 2^1021301009 is an apocalyptic number.

It is an amenable number.

1021301009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021301009 is an equidigital number, since it uses as much as digits as its factorization.

1021301009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1021301009 is about 31957.8004405810. The cubic root of 1021301009 is about 1007.0505098184.

The spelling of 1021301009 in words is "one billion, twenty-one million, three hundred one thousand, nine".