12421443562011 has 96 divisors (see below), whose sum is σ = 20173161715200. Its totient is φ = 7301362498560.

The previous prime is 12421443561997. The next prime is 12421443562061. The reversal of 12421443562011 is 11026534412421.

12421443562011 is a `hidden beast` number, since 1 + 2 + 4 + 2 + 1 + 443 + 5 + 6 + 201 + 1 = 666.

It is not a de Polignac number, because 12421443562011 - 2³⁵ = 12387083823643 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12421443562061) by changing a digit.

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 95 ways as a sum of consecutive naturals, for example, 161798211 + ... + 161874963.

It is an arithmetic number, because the mean of its divisors is an integer number (210137101200).

Almost surely, 2^{12421443562011} is an apocalyptic number.

12421443562011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12421443562011 is a deficient number, since it is larger than the sum of its proper divisors (7751718153189).

12421443562011 is a wasteful number, since it uses less digits than its factorization.

12421443562011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77201 (or 77198 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

Adding to 12421443562011 its reverse (11026534412421), we get a palindrome (23447977974432).

The spelling of 12421443562011 in words is "twelve trillion, four hundred twenty-one billion, four hundred forty-three million, five hundred sixty-two thousand, eleven".