221102211222 has 32 divisors (see below), whose sum is σ = 498068916960. Its totient is φ = 72691136640.

The previous prime is 221102211199. The next prime is 221102211271. The reversal of 221102211222 is 222112201122.

It is a happy number.

221102211222 is a `hidden beast` number, since 221 + 1 + 0 + 221 + 1 + 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 = 221102211195 and 221102211204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28040479 + ... + 28048362.

It is an arithmetic number, because the mean of its divisors is an integer number (15564653655).

Almost surely, 2^221102211222 is an apocalyptic number.

221102211222 is an abundant number, since it is smaller than the sum of its proper divisors (276966705738).

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

221102211222 is a wasteful number, since it uses less digits than its factorization.

221102211222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56088925 (or 56088919 counting only the distinct ones).

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

Adding to 221102211222 its reverse (222112201122), we get a palindrome (443214412344).

The spelling of 221102211222 in words is "two hundred twenty-one billion, one hundred two million, two hundred eleven thousand, two hundred twenty-two".