221021110222 has 8 divisors (see below), whose sum is σ = 361670907672. Its totient is φ = 100464141000.

The previous prime is 221021110213. The next prime is 221021110249. The reversal of 221021110222 is 222011120122.

It is a happy number.

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 = 221021110196 and 221021110205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5023207029 + ... + 5023207072.

It is an arithmetic number, because the mean of its divisors is an integer number (45208863459).

Almost surely, 2^221021110222 is an apocalyptic number.

221021110222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221021110222 is a deficient number, since it is larger than the sum of its proper divisors (140649797450).

221021110222 is a wasteful number, since it uses less digits than its factorization.

221021110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10046414114.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221021110222 its reverse (222011120122), we get a palindrome (443032230344).

The spelling of 221021110222 in words is "two hundred twenty-one billion, twenty-one million, one hundred ten thousand, two hundred twenty-two".