221144339 has 16 divisors (see below), whose sum is σ = 242694144. Its totient is φ = 200272800.

The previous prime is 221144321. The next prime is 221144369. The reversal of 221144339 is 933441122.

221144339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-221144339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221144369) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242294 + ... + 243204.

It is an arithmetic number, because the mean of its divisors is an integer number (15168384).

Almost surely, 2^221144339 is an apocalyptic number.

221144339 is a deficient number, since it is larger than the sum of its proper divisors (21549805).

221144339 is a wasteful number, since it uses less digits than its factorization.

221144339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258.

The product of its digits is 5184, while the sum is 29.

The square root of 221144339 is about 14870.9226008342. The cubic root of 221144339 is about 604.7259547049.

The spelling of 221144339 in words is "two hundred twenty-one million, one hundred forty-four thousand, three hundred thirty-nine".