12122223222 has 16 divisors (see below), whose sum is σ = 24253988400. Its totient is φ = 4039150752.

The previous prime is 12122223203. The next prime is 12122223233. The reversal of 12122223222 is 22232222121.

12122223222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12122223222² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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 7 ways as a sum of consecutive naturals, for example, 381013 + ... + 411600.

It is an arithmetic number, because the mean of its divisors is an integer number (1515874275).

Almost surely, 2^12122223222 is an apocalyptic number.

12122223222 is an abundant number, since it is smaller than the sum of its proper divisors (12131765178).

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

12122223222 is a wasteful number, since it uses less digits than its factorization.

12122223222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795167.

The product of its digits is 768, while the sum is 21.

Adding to 12122223222 its reverse (22232222121), we get a palindrome (34354445343).

It can be divided in two parts, 121 and 22223222, that multiplied together give a palindrome (2689009862).

The spelling of 12122223222 in words is "twelve billion, one hundred twenty-two million, two hundred twenty-three thousand, two hundred twenty-two".