221104135 has 8 divisors (see below), whose sum is σ = 303228576. Its totient is φ = 151614240.

The previous prime is 221104133. The next prime is 221104171. The reversal of 221104135 is 531401122.

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

It is not a de Polignac number, because 221104135 - 2¹ = 221104133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221104133) 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, 3158596 + ... + 3158665.

It is an arithmetic number, because the mean of its divisors is an integer number (37903572).

Almost surely, 2^221104135 is an apocalyptic number.

221104135 is a deficient number, since it is larger than the sum of its proper divisors (82124441).

221104135 is an equidigital number, since it uses as much as digits as its factorization.

221104135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317273.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 221104135 is about 14869.5707738993. The cubic root of 221104135 is about 604.6893061283.

Adding to 221104135 its reverse (531401122), we get a palindrome (752505257).

The spelling of 221104135 in words is "two hundred twenty-one million, one hundred four thousand, one hundred thirty-five".