300003001021 has 2 divisors, whose sum is σ = 300003001022. Its totient is φ = 300003001020.

The previous prime is 300003001007. The next prime is 300003001057. The reversal of 300003001021 is 120100300003.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 269869860100 + 30133140921 = 519490^2 + 173589^2 .

It is a cyclic number.

It is not a de Polignac number, because 300003001021 - 2¹⁵ = 300002968253 is a prime.

It is a super-2 number, since 2×300003001021² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 300003000989 and 300003001007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (300003001121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150001500510 + 150001500511.

It is an arithmetic number, because the mean of its divisors is an integer number (150001500511).

Almost surely, 2^300003001021 is an apocalyptic number.

It is an amenable number.

300003001021 is a deficient number, since it is larger than the sum of its proper divisors (1).

300003001021 is an equidigital number, since it uses as much as digits as its factorization.

300003001021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 10.

Adding to 300003001021 its reverse (120100300003), we get a palindrome (420103301024).

The spelling of 300003001021 in words is "three hundred billion, three million, one thousand, twenty-one".