2144104221 has 24 divisors (see below), whose sum is σ = 3372404544. Its totient is φ = 1207940160.

The previous prime is 2144104219. The next prime is 2144104247. The reversal of 2144104221 is 1224014412.

It is not a de Polignac number, because 2144104221 - 2¹ = 2144104219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144104021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 92280 + ... + 113153.

It is an arithmetic number, because the mean of its divisors is an integer number (140516856).

Almost surely, 2^2144104221 is an apocalyptic number.

2144104221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2144104221 is a deficient number, since it is larger than the sum of its proper divisors (1228300323).

2144104221 is a wasteful number, since it uses less digits than its factorization.

2144104221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205521 (or 205514 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 2144104221 is about 46304.4730128743. The cubic root of 2144104221 is about 1289.4820389162.

Adding to 2144104221 its reverse (1224014412), we get a palindrome (3368118633).

The spelling of 2144104221 in words is "two billion, one hundred forty-four million, one hundred four thousand, two hundred twenty-one".