21000302027 has 2 divisors, whose sum is σ = 21000302028. Its totient is φ = 21000302026.

The previous prime is 21000302009. The next prime is 21000302041. The reversal of 21000302027 is 72020300012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000302027 - 2¹⁴ = 21000285643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21000301996 and 21000302014.

It is not a weakly prime, because it can be changed into another prime (21000302077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10500151013 + 10500151014.

It is an arithmetic number, because the mean of its divisors is an integer number (10500151014).

Almost surely, 2^21000302027 is an apocalyptic number.

21000302027 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000302027 is an equidigital number, since it uses as much as digits as its factorization.

21000302027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 17.

Adding to 21000302027 its reverse (72020300012), we get a palindrome (93020602039).

The spelling of 21000302027 in words is "twenty-one billion, three hundred two thousand, twenty-seven".