2144204421 has 8 divisors (see below), whose sum is σ = 2877149664. Its totient is φ = 1420364400.

The previous prime is 2144204389. The next prime is 2144204431. The reversal of 2144204421 is 1244024412.

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

It is not a de Polignac number, because 2144204421 - 2⁵ = 2144204389 is a prime.

It is a super-2 number, since 2×2144204421² = 9195225198071890482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2144204391 and 2144204400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144204431) 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, 2275755 + ... + 2276696.

It is an arithmetic number, because the mean of its divisors is an integer number (359643708).

Almost surely, 2^2144204421 is an apocalyptic number.

It is an amenable number.

2144204421 is a deficient number, since it is larger than the sum of its proper divisors (732945243).

2144204421 is a wasteful number, since it uses less digits than its factorization.

2144204421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552611.

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 2144204421 is about 46305.5549691395. The cubic root of 2144204421 is about 1289.5021256399.

Adding to 2144204421 its reverse (1244024412), we get a palindrome (3388228833).

Subtracting from 2144204421 its reverse (1244024412), we obtain a square (900180009 = 30003²).

The spelling of 2144204421 in words is "two billion, one hundred forty-four million, two hundred four thousand, four hundred twenty-one".