12210022222 has 16 divisors (see below), whose sum is σ = 18495086400. Its totient is φ = 6045098752.

The previous prime is 12210022177. The next prime is 12210022241. The reversal of 12210022222 is 22222001221.

It is a junction number, because it is equal to n+sod(n) for n = 12210022196 and 12210022205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211323 + ... + 262825.

It is an arithmetic number, because the mean of its divisors is an integer number (1155942900).

Almost surely, 2^12210022222 is an apocalyptic number.

12210022222 is a deficient number, since it is larger than the sum of its proper divisors (6285064178).

12210022222 is a wasteful number, since it uses less digits than its factorization.

12210022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52667.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 12210022222 its reverse (22222001221), we get a palindrome (34432023443).

The spelling of 12210022222 in words is "twelve billion, two hundred ten million, twenty-two thousand, two hundred twenty-two".