221100112222 has 16 divisors (see below), whose sum is σ = 365382367344. Its totient is φ = 99505000000.

The previous prime is 221100112217. The next prime is 221100112249. The reversal of 221100112222 is 222211001122.

It is a happy number.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 221100112196 and 221100112205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49750279 + ... + 49754722.

It is an arithmetic number, because the mean of its divisors is an integer number (22836397959).

Almost surely, 2^221100112222 is an apocalyptic number.

221100112222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221100112222 is a deficient number, since it is larger than the sum of its proper divisors (144282255122).

221100112222 is a wasteful number, since it uses less digits than its factorization.

221100112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99505115.

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

Adding to 221100112222 its reverse (222211001122), we get a palindrome (443311113344).

Subtracting 221100112222 from its reverse (222211001122), we obtain a square (1110888900 = 33330²).

It can be divided in two parts, 2211001122 and 22, that multiplied together give a palindrome (48642024684).

The spelling of 221100112222 in words is "two hundred twenty-one billion, one hundred million, one hundred twelve thousand, two hundred twenty-two".