221104104 has 32 divisors (see below), whose sum is σ = 595281120. Its totient is φ = 68031936.

The previous prime is 221104097. The next prime is 221104127. The reversal of 221104104 is 401401122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354022 + ... + 354645.

It is an arithmetic number, because the mean of its divisors is an integer number (18602535).

Almost surely, 2^221104104 is an apocalyptic number.

221104104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

221104104 is an abundant number, since it is smaller than the sum of its proper divisors (374177016).

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

221104104 is a wasteful number, since it uses less digits than its factorization.

221104104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708689 (or 708685 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 221104104 is about 14869.5697315020. The cubic root of 221104104 is about 604.6892778680.

Adding to 221104104 its reverse (401401122), we get a palindrome (622505226).

The spelling of 221104104 in words is "two hundred twenty-one million, one hundred four thousand, one hundred four".