221104136 has 32 divisors (see below), whose sum is σ = 452882880. Its totient is φ = 100363200.

The previous prime is 221104133. The next prime is 221104171. The reversal of 221104136 is 631401122.

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 (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89510 + ... + 91946.

It is an arithmetic number, because the mean of its divisors is an integer number (14152590).

Almost surely, 2^221104136 is an apocalyptic number.

It is an amenable number.

221104136 is an abundant number, since it is smaller than the sum of its proper divisors (231778744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221104136 is a wasteful number, since it uses less digits than its factorization.

221104136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485 (or 3481 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 221104136 is about 14869.5708075250. The cubic root of 221104136 is about 604.6893070399.

Adding to 221104136 its reverse (631401122), we get a palindrome (852505258).

The spelling of 221104136 in words is "two hundred twenty-one million, one hundred four thousand, one hundred thirty-six".