122222312212 has 72 divisors (see below), whose sum is σ = 288757732032. Its totient is φ = 43956057600.

The previous prime is 122222312159. The next prime is 122222312227. The reversal of 122222312212 is 212213222221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 23 ways as a sum of consecutive naturals, for example, 1121989 + ... + 1226092.

It is an arithmetic number, because the mean of its divisors is an integer number (4010524056).

Almost surely, 2^122222312212 is an apocalyptic number.

It is an amenable number.

122222312212 is an abundant number, since it is smaller than the sum of its proper divisors (166535419820).

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

122222312212 is a wasteful number, since it uses less digits than its factorization.

122222312212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348129 (or 2348114 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

Adding to 122222312212 its reverse (212213222221), we get a palindrome (334435534433).

It can be divided in two parts, 122222 and 312212, that added together give a palindrome (434434).

The spelling of 122222312212 in words is "one hundred twenty-two billion, two hundred twenty-two million, three hundred twelve thousand, two hundred twelve".