2112143424040 has 128 divisors (see below), whose sum is σ = 5304036971520. Its totient is φ = 751703040000.

The previous prime is 2112143423981. The next prime is 2112143424043. The reversal of 2112143424040 is 404243412112.

It is a super-2 number, since 2×2112143424040² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112143424043) 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 31 ways as a sum of consecutive naturals, for example, 3785112 + ... + 4307128.

It is an arithmetic number, because the mean of its divisors is an integer number (41437788840).

Almost surely, 2^{2112143424040} is an apocalyptic number.

2112143424040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112143424040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2652018485760).

2112143424040 is an abundant number, since it is smaller than the sum of its proper divisors (3191893547480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112143424040 is a wasteful number, since it uses less digits than its factorization.

2112143424040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522323 (or 522319 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 2112143424040 its reverse (404243412112), we get a palindrome (2516386836152).

The spelling of 2112143424040 in words is "two trillion, one hundred twelve billion, one hundred forty-three million, four hundred twenty-four thousand, forty".