2123134404443 has 16 divisors (see below), whose sum is σ = 2293998159936. Its totient is φ = 1953349931520.

The previous prime is 2123134404439. The next prime is 2123134404463. The reversal of 2123134404443 is 3444044313212.

It is not a de Polignac number, because 2123134404443 - 2² = 2123134404439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2123134404463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49950146 + ... + 49992632.

It is an arithmetic number, because the mean of its divisors is an integer number (143374884996).

Almost surely, 2^{2123134404443} is an apocalyptic number.

2123134404443 is a deficient number, since it is larger than the sum of its proper divisors (170863755493).

2123134404443 is a wasteful number, since it uses less digits than its factorization.

2123134404443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55094.

The product of its (nonzero) digits is 110592, while the sum is 35.

Adding to 2123134404443 its reverse (3444044313212), we get a palindrome (5567178717655).

The spelling of 2123134404443 in words is "two trillion, one hundred twenty-three billion, one hundred thirty-four million, four hundred four thousand, four hundred forty-three".