221140241 has 8 divisors (see below), whose sum is σ = 252868224. Its totient is φ = 189446400.

The previous prime is 221140237. The next prime is 221140273. The reversal of 221140241 is 142041122.

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 221140241 - 2² = 221140237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221140291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7316 + ... + 22266.

It is an arithmetic number, because the mean of its divisors is an integer number (31608528).

Almost surely, 2^221140241 is an apocalyptic number.

It is an amenable number.

221140241 is a deficient number, since it is larger than the sum of its proper divisors (31727983).

221140241 is a wasteful number, since it uses less digits than its factorization.

221140241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17071.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 221140241 is about 14870.7848145281. The cubic root of 221140241 is about 604.7222193131.

Adding to 221140241 its reverse (142041122), we get a palindrome (363181363).

The spelling of 221140241 in words is "two hundred twenty-one million, one hundred forty thousand, two hundred forty-one".