221041121 has 8 divisors (see below), whose sum is σ = 253007040. Its totient is φ = 189172368.

The previous prime is 221041099. The next prime is 221041159. The reversal of 221041121 is 121140122.

It is a happy number.

221041121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 221041121 - 2¹⁴ = 221024737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221041096 and 221041105.

It is not an unprimeable number, because it can be changed into a prime (221041321) 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, 19346 + ... + 28571.

It is an arithmetic number, because the mean of its divisors is an integer number (31625880).

Almost surely, 2^221041121 is an apocalyptic number.

It is an amenable number.

221041121 is a deficient number, since it is larger than the sum of its proper divisors (31965919).

221041121 is an equidigital number, since it uses as much as digits as its factorization.

221041121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48583.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 221041121 is about 14867.4517318873. The cubic root of 221041121 is about 604.6318558046.

Adding to 221041121 its reverse (121140122), we get a palindrome (342181243).

Subtracting from 221041121 its reverse (121140122), we obtain a palindrome (99900999).

The spelling of 221041121 in words is "two hundred twenty-one million, forty-one thousand, one hundred twenty-one".