2144012121 has 12 divisors (see below), whose sum is σ = 3168928048. Its totient is φ = 1396100664.

The previous prime is 2144012099. The next prime is 2144012161. The reversal of 2144012121 is 1212104412.

It is not a de Polignac number, because 2144012121 - 2⁹ = 2144011609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144012094 and 2144012103.

It is not an unprimeable number, because it can be changed into a prime (2144012161) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2769655 + ... + 2770428.

Almost surely, 2^2144012121 is an apocalyptic number.

It is an amenable number.

2144012121 is a deficient number, since it is larger than the sum of its proper divisors (1024915927).

2144012121 is a wasteful number, since it uses less digits than its factorization.

2144012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5540132 (or 5540129 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

The square root of 2144012121 is about 46303.4784978407. The cubic root of 2144012121 is about 1289.4635754175.

Adding to 2144012121 its reverse (1212104412), we get a palindrome (3356116533).

The spelling of 2144012121 in words is "two billion, one hundred forty-four million, twelve thousand, one hundred twenty-one".