221244441 has 8 divisors (see below), whose sum is σ = 321810144. Its totient is φ = 134087520.

The previous prime is 221244431. The next prime is 221244461. The reversal of 221244441 is 144442122.

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

It is not a de Polignac number, because 221244441 - 2¹⁵ = 221211673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221244421) 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, 3352156 + ... + 3352221.

It is an arithmetic number, because the mean of its divisors is an integer number (40226268).

Almost surely, 2^221244441 is an apocalyptic number.

It is an amenable number.

221244441 is a deficient number, since it is larger than the sum of its proper divisors (100565703).

221244441 is a wasteful number, since it uses less digits than its factorization.

221244441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6704391.

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

The square root of 221244441 is about 14874.2879157289. The cubic root of 221244441 is about 604.8171849340.

Adding to 221244441 its reverse (144442122), we get a palindrome (365686563).

It can be divided in two parts, 22124 and 4441, that added together give a triangular number (26565 = T₂₃₀).

The spelling of 221244441 in words is "two hundred twenty-one million, two hundred forty-four thousand, four hundred forty-one".