2144223121 has 8 divisors (see below), whose sum is σ = 2169922664. Its totient is φ = 2118597120.

The previous prime is 2144223113. The next prime is 2144223247. The reversal of 2144223121 is 1213224412.

It can be written as a sum of positive squares in 4 ways, for example, as 31809600 + 2112413521 = 5640^2 + 45961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144223121 - 2³ = 2144223113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2144223092 and 2144223101.

It is not an unprimeable number, because it can be changed into a prime (2144229121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41431 + ... + 77491.

It is an arithmetic number, because the mean of its divisors is an integer number (271240333).

Almost surely, 2^2144223121 is an apocalyptic number.

It is an amenable number.

2144223121 is a deficient number, since it is larger than the sum of its proper divisors (25699543).

2144223121 is an equidigital number, since it uses as much as digits as its factorization.

2144223121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36771.

The product of its digits is 768, while the sum is 22.

The square root of 2144223121 is about 46305.7568883179. The cubic root of 2144223121 is about 1289.5058742905.

Adding to 2144223121 its reverse (1213224412), we get a palindrome (3357447533).

The spelling of 2144223121 in words is "two billion, one hundred forty-four million, two hundred twenty-three thousand, one hundred twenty-one".