221041023 has 32 divisors (see below), whose sum is σ = 342766080. Its totient is φ = 124101120.

The previous prime is 221041019. The next prime is 221041031. The reversal of 221041023 is 320140122.

It is not a de Polignac number, because 221041023 - 2² = 221041019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221040993 and 221041011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221041043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 424003 + ... + 424523.

It is an arithmetic number, because the mean of its divisors is an integer number (10711440).

Almost surely, 2^221041023 is an apocalyptic number.

221041023 is a deficient number, since it is larger than the sum of its proper divisors (121725057).

221041023 is a wasteful number, since it uses less digits than its factorization.

221041023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 221041023 is about 14867.4484360969. The cubic root of 221041023 is about 604.6317664488.

Adding to 221041023 its reverse (320140122), we get a palindrome (541181145).

Subtracting 221041023 from its reverse (320140122), we obtain a palindrome (99099099).

The spelling of 221041023 in words is "two hundred twenty-one million, forty-one thousand, twenty-three".