221102222 has 8 divisors (see below), whose sum is σ = 361803672. Its totient is φ = 100501000.

The previous prime is 221102213. The next prime is 221102227. The reversal of 221102222 is 222201122.

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

It is a junction number, because it is equal to n+sod(n) for n = 221102197 and 221102206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221102227) 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 3 ways as a sum of consecutive naturals, for example, 5025029 + ... + 5025072.

It is an arithmetic number, because the mean of its divisors is an integer number (45225459).

Almost surely, 2^221102222 is an apocalyptic number.

221102222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221102222 is a deficient number, since it is larger than the sum of its proper divisors (140701450).

221102222 is a wasteful number, since it uses less digits than its factorization.

221102222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10050114.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 221102222 is about 14869.5064477608. The cubic root of 221102222 is about 604.6875621929.

Adding to 221102222 its reverse (222201122), we get a palindrome (443303344).

The spelling of 221102222 in words is "two hundred twenty-one million, one hundred two thousand, two hundred twenty-two".