221110004 has 24 divisors (see below), whose sum is σ = 391523328. Its totient is φ = 109254560.

The previous prime is 221110003. The next prime is 221110013. The reversal of 221110004 is 400011122.

221110004 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221110003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126722 + ... + 128454.

It is an arithmetic number, because the mean of its divisors is an integer number (16313472).

Almost surely, 2^221110004 is an apocalyptic number.

It is an amenable number.

221110004 is a deficient number, since it is larger than the sum of its proper divisors (170413324).

221110004 is a wasteful number, since it uses less digits than its factorization.

221110004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2093 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 221110004 is about 14869.7681219312. The cubic root of 221110004 is about 604.6946563827.

Adding to 221110004 its reverse (400011122), we get a palindrome (621121126).

The spelling of 221110004 in words is "two hundred twenty-one million, one hundred ten thousand, four".