2001144043124 has 12 divisors (see below), whose sum is σ = 3502502624964. Its totient is φ = 1000429007424.

The previous prime is 2001144043103. The next prime is 2001144043133. The reversal of 2001144043124 is 4213404411002.

It can be written as a sum of positive squares in 2 ways, for example, as 787599451024 + 1213544592100 = 887468^2 + 1101610^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2001144043093 and 2001144043102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35722049 + ... + 35778024.

It is an arithmetic number, because the mean of its divisors is an integer number (291875218747).

Almost surely, 2^{2001144043124} is an apocalyptic number.

It is an amenable number.

2001144043124 is a deficient number, since it is larger than the sum of its proper divisors (1501358581840).

2001144043124 is a wasteful number, since it uses less digits than its factorization.

2001144043124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71507074 (or 71507072 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 2001144043124 its reverse (4213404411002), we get a palindrome (6214548454126).

The spelling of 2001144043124 in words is "two trillion, one billion, one hundred forty-four million, forty-three thousand, one hundred twenty-four".