221603041 has 16 divisors (see below), whose sum is σ = 256746240. Its totient is φ = 189031680.

The previous prime is 221603029. The next prime is 221603051. The reversal of 221603041 is 140306122.

221603041 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 221603041 - 2¹¹ = 221600993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221603021) 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, 67015 + ... + 70243.

It is an arithmetic number, because the mean of its divisors is an integer number (16046640).

Almost surely, 2^221603041 is an apocalyptic number.

It is an amenable number.

221603041 is a deficient number, since it is larger than the sum of its proper divisors (35143199).

221603041 is a wasteful number, since it uses less digits than its factorization.

221603041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3624.

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

The square root of 221603041 is about 14886.3373937312. The cubic root of 221603041 is about 605.1437774992.

Adding to 221603041 its reverse (140306122), we get a palindrome (361909163).

The spelling of 221603041 in words is "two hundred twenty-one million, six hundred three thousand, forty-one".