2012123421143 has 6 divisors (see below), whose sum is σ = 2211672851472. Its totient is φ = 1829203110020.

The previous prime is 2012123421107. The next prime is 2012123421149. The reversal of 2012123421143 is 3411243212102.

It is a happy number.

It is not a de Polignac number, because 2012123421143 - 2²⁸ = 2011854985687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012123421149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8314559471 + ... + 8314559712.

It is an arithmetic number, because the mean of its divisors is an integer number (368612141912).

Almost surely, 2^{2012123421143} is an apocalyptic number.

2012123421143 is a deficient number, since it is larger than the sum of its proper divisors (199549430329).

2012123421143 is a wasteful number, since it uses less digits than its factorization.

2012123421143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16629119205 (or 16629119194 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 2012123421143 its reverse (3411243212102), we get a palindrome (5423366633245).

The spelling of 2012123421143 in words is "two trillion, twelve billion, one hundred twenty-three million, four hundred twenty-one thousand, one hundred forty-three".