221317112 has 8 divisors (see below), whose sum is σ = 414969600. Its totient is φ = 110658552.

The previous prime is 221317099. The next prime is 221317121. The reversal of 221317112 is 211713122.

221317112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13832312 + ... + 13832327.

It is an arithmetic number, because the mean of its divisors is an integer number (51871200).

Almost surely, 2^221317112 is an apocalyptic number.

It is an amenable number.

221317112 is a deficient number, since it is larger than the sum of its proper divisors (193652488).

221317112 is a wasteful number, since it uses less digits than its factorization.

221317112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27664645 (or 27664641 counting only the distinct ones).

The product of its digits is 168, while the sum is 20.

The square root of 221317112 is about 14876.7305547960. The cubic root of 221317112 is about 604.8833980601.

The spelling of 221317112 in words is "two hundred twenty-one million, three hundred seventeen thousand, one hundred twelve".