21000323016067 has 2 divisors, whose sum is σ = 21000323016068. Its totient is φ = 21000323016066.

The previous prime is 21000323016037. The next prime is 21000323016083. The reversal of 21000323016067 is 76061032300012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21000323016067 - 2²⁷ = 21000188798339 is a prime.

It is not a weakly prime, because it can be changed into another prime (21000323016017) 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, 10500161508033 + 10500161508034.

It is an arithmetic number, because the mean of its divisors is an integer number (10500161508034).

Almost surely, 2^{21000323016067} is an apocalyptic number.

21000323016067 is a deficient number, since it is larger than the sum of its proper divisors (1).

21000323016067 is an equidigital number, since it uses as much as digits as its factorization.

21000323016067 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

Adding to 21000323016067 its reverse (76061032300012), we get a palindrome (97061355316079).

The spelling of 21000323016067 in words is "twenty-one trillion, three hundred twenty-three million, sixteen thousand, sixty-seven".