221354404 has 12 divisors (see below), whose sum is σ = 388150000. Its totient is φ = 110454408.

The previous prime is 221354383. The next prime is 221354407. The reversal of 221354404 is 404453122.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (221354407) 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 3 ways as a sum of consecutive naturals, for example, 53454 + ... + 57445.

Almost surely, 2^221354404 is an apocalyptic number.

It is an amenable number.

221354404 is a deficient number, since it is larger than the sum of its proper divisors (166795596).

221354404 is a wasteful number, since it uses less digits than its factorization.

221354404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111402 (or 111400 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 221354404 is about 14877.9838687908. The cubic root of 221354404 is about 604.9173704969.

The spelling of 221354404 in words is "two hundred twenty-one million, three hundred fifty-four thousand, four hundred four".