12210219905 has 32 divisors (see below), whose sum is σ = 15885894528. Its totient is φ = 8956108800.

The previous prime is 12210219899. The next prime is 12210219913. The reversal of 12210219905 is 50991201221.

12210219905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12210219905 - 2¹⁴ = 12210203521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 9457310 + ... + 9458600.

It is an arithmetic number, because the mean of its divisors is an integer number (496434204).

Almost surely, 2^12210219905 is an apocalyptic number.

It is an amenable number.

12210219905 is a deficient number, since it is larger than the sum of its proper divisors (3675674623).

12210219905 is a wasteful number, since it uses less digits than its factorization.

12210219905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2177.

The product of its (nonzero) digits is 3240, while the sum is 32.

The spelling of 12210219905 in words is "twelve billion, two hundred ten million, two hundred nineteen thousand, nine hundred five".