2001844127122 has 40 divisors (see below), whose sum is σ = 3503487427596. Its totient is φ = 857818424736.

The previous prime is 2001844127053. The next prime is 2001844127189. The reversal of 2001844127122 is 2217214481002.

It can be written as a sum of positive squares in 2 ways, for example, as 1527273317241 + 474570809881 = 1235829^2 + 688891^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 42680748 + ... + 42727624.

Almost surely, 2^{2001844127122} is an apocalyptic number.

2001844127122 is a deficient number, since it is larger than the sum of its proper divisors (1501643300474).

2001844127122 is an frugal number, since it uses more digits than its factorization.

2001844127122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55800 (or 55779 counting only the distinct ones).

The product of its (nonzero) digits is 14336, while the sum is 34.

The spelling of 2001844127122 in words is "two trillion, one billion, eight hundred forty-four million, one hundred twenty-seven thousand, one hundred twenty-two".