2144546221 has 8 divisors (see below), whose sum is σ = 2192344704. Its totient is φ = 2096838240.

The previous prime is 2144546203. The next prime is 2144546227. The reversal of 2144546221 is 1226454412.

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 2144546221 - 2¹⁷ = 2144415149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144546227) 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, 26466 + ... + 70636.

It is an arithmetic number, because the mean of its divisors is an integer number (274043088).

Almost surely, 2^2144546221 is an apocalyptic number.

It is an amenable number.

2144546221 is a deficient number, since it is larger than the sum of its proper divisors (47798483).

2144546221 is a wasteful number, since it uses less digits than its factorization.

2144546221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45251.

The product of its digits is 15360, while the sum is 31.

The square root of 2144546221 is about 46309.2455239772. The cubic root of 2144546221 is about 1289.5706403152.

The spelling of 2144546221 in words is "two billion, one hundred forty-four million, five hundred forty-six thousand, two hundred twenty-one".