222216281 has 8 divisors (see below), whose sum is σ = 255644544. Its totient is φ = 189208800.

The previous prime is 222216259. The next prime is 222216283. The reversal of 222216281 is 182612222.

222216281 is digitally balanced in base 2, 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 cyclic number.

It is not a de Polignac number, because 222216281 - 2¹⁴ = 222199897 is a prime.

It is a super-2 number, since 2×222216281² = 98760151082941922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222216281.

It is not an unprimeable number, because it can be changed into a prime (222216283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104060 + ... + 106173.

It is an arithmetic number, because the mean of its divisors is an integer number (31955568).

Almost surely, 2^222216281 is an apocalyptic number.

It is an amenable number.

222216281 is a deficient number, since it is larger than the sum of its proper divisors (33428263).

222216281 is a wasteful number, since it uses less digits than its factorization.

222216281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210391.

The product of its digits is 1536, while the sum is 26.

The square root of 222216281 is about 14906.9205740153. The cubic root of 222216281 is about 605.7014662707.

The spelling of 222216281 in words is "two hundred twenty-two million, two hundred sixteen thousand, two hundred eighty-one".