221347084 has 12 divisors (see below), whose sum is σ = 442694224. Its totient is φ = 94863024.

The previous prime is 221347079. The next prime is 221347117. The reversal of 221347084 is 480743122.

221347084 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

221347084 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3952599 + ... + 3952654.

Almost surely, 2^221347084 is an apocalyptic number.

It is an amenable number.

221347084 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

221347084 is a wasteful number, since it uses less digits than its factorization.

221347084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7905264 (or 7905262 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 221347084 is about 14877.7378656837. The cubic root of 221347084 is about 604.9107023908.

The spelling of 221347084 in words is "two hundred twenty-one million, three hundred forty-seven thousand, eighty-four".