216554222 has 8 divisors (see below), whose sum is σ = 325717536. Its totient is φ = 107981712.

The previous prime is 216554213. The next prime is 216554227. The reversal of 216554222 is 222455612.

216554222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216554227) 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, 146783 + ... + 148250.

It is an arithmetic number, because the mean of its divisors is an integer number (40714692).

Almost surely, 2^216554222 is an apocalyptic number.

216554222 is a deficient number, since it is larger than the sum of its proper divisors (109163314).

216554222 is a wasteful number, since it uses less digits than its factorization.

216554222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295402.

The product of its digits is 9600, while the sum is 29.

The square root of 216554222 is about 14715.7813927769. The cubic root of 216554222 is about 600.5127302399.

The spelling of 216554222 in words is "two hundred sixteen million, five hundred fifty-four thousand, two hundred twenty-two".