1230301021 has 2 divisors, whose sum is σ = 1230301022. Its totient is φ = 1230301020.

The previous prime is 1230301013. The next prime is 1230301139. The reversal of 1230301021 is 1201030321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1050472921 + 179828100 = 32411^2 + 13410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1230301021 - 2³ = 1230301013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1230300992 and 1230301010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1230301001) 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, 615150510 + 615150511.

It is an arithmetic number, because the mean of its divisors is an integer number (615150511).

Almost surely, 2^1230301021 is an apocalyptic number.

It is an amenable number.

1230301021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1230301021 is an equidigital number, since it uses as much as digits as its factorization.

1230301021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1230301021 is about 35075.6471216142. The cubic root of 1230301021 is about 1071.5286680689.

Adding to 1230301021 its reverse (1201030321), we get a palindrome (2431331342).

The spelling of 1230301021 in words is "one billion, two hundred thirty million, three hundred one thousand, twenty-one".