2123043111242 has 16 divisors (see below), whose sum is σ = 3352384812960. Its totient is φ = 1005588556272.

The previous prime is 2123043111199. The next prime is 2123043111251. The reversal of 2123043111242 is 2421113403212.

It is a happy number.

It is a super-2 number, since 2×2123043111242² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1149293 + ... + 2359440.

It is an arithmetic number, because the mean of its divisors is an integer number (209524050810).

Almost surely, 2^{2123043111242} is an apocalyptic number.

2123043111242 is a deficient number, since it is larger than the sum of its proper divisors (1229341701718).

2123043111242 is a wasteful number, since it uses less digits than its factorization.

2123043111242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524677.

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

Adding to 2123043111242 its reverse (2421113403212), we get a palindrome (4544156514454).

The spelling of 2123043111242 in words is "two trillion, one hundred twenty-three billion, forty-three million, one hundred eleven thousand, two hundred forty-two".