12210564055 has 4 divisors (see below), whose sum is σ = 14652676872. Its totient is φ = 9768451240.

The previous prime is 12210564043. The next prime is 12210564071. The reversal of 12210564055 is 55046501221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55046501221 = 32377 ⋅1700173.

It is not a de Polignac number, because 12210564055 - 2¹⁹ = 12210039767 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221056401 + ... + 1221056410.

It is an arithmetic number, because the mean of its divisors is an integer number (3663169218).

Almost surely, 2^12210564055 is an apocalyptic number.

12210564055 is a deficient number, since it is larger than the sum of its proper divisors (2442112817).

12210564055 is an equidigital number, since it uses as much as digits as its factorization.

12210564055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2442112816.

The product of its (nonzero) digits is 12000, while the sum is 31.

The spelling of 12210564055 in words is "twelve billion, two hundred ten million, five hundred sixty-four thousand, fifty-five".