10302310021 has 2 divisors, whose sum is σ = 10302310022. Its totient is φ = 10302310020.

The previous prime is 10302309989. The next prime is 10302310027. The reversal of 10302310021 is 12001320301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8641747521 + 1660562500 = 92961^2 + 40750^2 .

It is an emirp because it is prime and its reverse (12001320301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10302310021 - 2⁵ = 10302309989 is a prime.

It is a super-2 number, since 2×10302310021² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10302309983 and 10302310010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10302310027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5151155010 + 5151155011.

It is an arithmetic number, because the mean of its divisors is an integer number (5151155011).

Almost surely, 2^10302310021 is an apocalyptic number.

It is an amenable number.

10302310021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10302310021 is an equidigital number, since it uses as much as digits as its factorization.

10302310021 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.

Adding to 10302310021 its reverse (12001320301), we get a palindrome (22303630322).

The spelling of 10302310021 in words is "ten billion, three hundred two million, three hundred ten thousand, twenty-one".