18450012211 has 2 divisors, whose sum is σ = 18450012212. Its totient is φ = 18450012210.

The previous prime is 18450012181. The next prime is 18450012221. The reversal of 18450012211 is 11221005481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18450012211 - 2¹⁹ = 18449487923 is a prime.

It is not a weakly prime, because it can be changed into another prime (18450012221) 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, 9225006105 + 9225006106.

It is an arithmetic number, because the mean of its divisors is an integer number (9225006106).

Almost surely, 2^18450012211 is an apocalyptic number.

18450012211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18450012211 is an equidigital number, since it uses as much as digits as its factorization.

18450012211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 25.

Adding to 18450012211 its reverse (11221005481), we get a palindrome (29671017692).

The spelling of 18450012211 in words is "eighteen billion, four hundred fifty million, twelve thousand, two hundred eleven".