221036041 has 4 divisors (see below), whose sum is σ = 221274900. Its totient is φ = 220797184.

The previous prime is 221036021. The next prime is 221036051. The reversal of 221036041 is 140630122.

221036041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102313225 + 118722816 = 10115^2 + 10896^2 .

It is a cyclic number.

It is not a de Polignac number, because 221036041 - 2¹⁷ = 220904969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221036021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118036 + ... + 119893.

It is an arithmetic number, because the mean of its divisors is an integer number (55318725).

Almost surely, 2^221036041 is an apocalyptic number.

It is an amenable number.

221036041 is a deficient number, since it is larger than the sum of its proper divisors (238859).

221036041 is an equidigital number, since it uses as much as digits as its factorization.

221036041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238858.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 221036041 is about 14867.2808879095. The cubic root of 221036041 is about 604.6272238560.

Adding to 221036041 its reverse (140630122), we get a palindrome (361666163).

The spelling of 221036041 in words is "two hundred twenty-one million, thirty-six thousand, forty-one".