221032441 has 16 divisors (see below), whose sum is σ = 257597440. Its totient is φ = 185749200.

The previous prime is 221032439. The next prime is 221032447. The reversal of 221032441 is 144230122.

It is not a de Polignac number, because 221032441 - 2¹ = 221032439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221032447) 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, 82180 + ... + 84826.

It is an arithmetic number, because the mean of its divisors is an integer number (16099840).

Almost surely, 2^221032441 is an apocalyptic number.

It is an amenable number.

221032441 is a deficient number, since it is larger than the sum of its proper divisors (36564999).

221032441 is a wasteful number, since it uses less digits than its factorization.

221032441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 221032441 is about 14867.1598161855. The cubic root of 221032441 is about 604.6239413297.

Adding to 221032441 its reverse (144230122), we get a palindrome (365262563).

The spelling of 221032441 in words is "two hundred twenty-one million, thirty-two thousand, four hundred forty-one".