221056604 has 12 divisors (see below), whose sum is σ = 395080224. Its totient is φ = 108176544.

The previous prime is 221056573. The next prime is 221056609. The reversal of 221056604 is 406650122.

221056604 is digitally balanced in base 2, 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 (221056609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587729 + ... + 588104.

It is an arithmetic number, because the mean of its divisors is an integer number (32923352).

Almost surely, 2^221056604 is an apocalyptic number.

It is an amenable number.

221056604 is a deficient number, since it is larger than the sum of its proper divisors (174023620).

221056604 is a wasteful number, since it uses less digits than its factorization.

221056604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175884 (or 1175882 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 221056604 is about 14867.9724239723. The cubic root of 221056604 is about 604.6459727804.

The spelling of 221056604 in words is "two hundred twenty-one million, fifty-six thousand, six hundred four".