222216481 has 8 divisors (see below), whose sum is σ = 225326304. Its totient is φ = 219117120.

The previous prime is 222216451. The next prime is 222216499. The reversal of 222216481 is 184612222.

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 222216481 - 2⁷ = 222216353 is a prime.

It is a super-2 number, since 2×222216481² = 98760328856046722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222216431) 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 7 ways as a sum of consecutive naturals, for example, 46441 + ... + 51001.

It is an arithmetic number, because the mean of its divisors is an integer number (28165788).

Almost surely, 2^222216481 is an apocalyptic number.

It is an amenable number.

222216481 is a deficient number, since it is larger than the sum of its proper divisors (3109823).

222216481 is an equidigital number, since it uses as much as digits as its factorization.

222216481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231.

The product of its digits is 3072, while the sum is 28.

The square root of 222216481 is about 14906.9272823074. The cubic root of 222216481 is about 605.7016479859.

The spelling of 222216481 in words is "two hundred twenty-two million, two hundred sixteen thousand, four hundred eighty-one".