2112343021443 has 16 divisors (see below), whose sum is σ = 3000411146880. Its totient is φ = 1318037747904.

The previous prime is 2112343021409. The next prime is 2112343021463. The reversal of 2112343021443 is 3441203432112.

It is not a de Polignac number, because 2112343021443 - 2⁶ = 2112343021379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2112343021443.

It is not an unprimeable number, because it can be changed into a prime (2112343021463) 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 15 ways as a sum of consecutive naturals, for example, 223240146 + ... + 223249607.

It is an arithmetic number, because the mean of its divisors is an integer number (187525696680).

Almost surely, 2^{2112343021443} is an apocalyptic number.

2112343021443 is a deficient number, since it is larger than the sum of its proper divisors (888068125437).

2112343021443 is a wasteful number, since it uses less digits than its factorization.

2112343021443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446489858.

The product of its (nonzero) digits is 13824, while the sum is 30.

Adding to 2112343021443 its reverse (3441203432112), we get a palindrome (5553546453555).

The spelling of 2112343021443 in words is "two trillion, one hundred twelve billion, three hundred forty-three million, twenty-one thousand, four hundred forty-three".