221122110222 has 64 divisors (see below), whose sum is σ = 529473208320. Its totient is φ = 68000018400.

The previous prime is 221122110161. The next prime is 221122110229. The reversal of 221122110222 is 222011221122.

It is a happy number.

221122110222 is a `hidden beast` number, since 2 + 211 + 221 + 10 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 221122110195 and 221122110204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221122110229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1199347 + ... + 1371377.

It is an arithmetic number, because the mean of its divisors is an integer number (8273018880).

Almost surely, 2^221122110222 is an apocalyptic number.

221122110222 is an abundant number, since it is smaller than the sum of its proper divisors (308351098098).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221122110222 is a wasteful number, since it uses less digits than its factorization.

221122110222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173886 (or 173880 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 221122110222 its reverse (222011221122), we get a palindrome (443133331344).

The spelling of 221122110222 in words is "two hundred twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two hundred twenty-two".