122222111112 has 80 divisors (see below), whose sum is σ = 345724721100. Its totient is φ = 40337308800.

The previous prime is 122222111093. The next prime is 122222111171. The reversal of 122222111112 is 211111222221.

It can be written as a sum of positive squares in 2 ways, for example, as 122154444036 + 67667076 = 349506^2 + 8226^2 .

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 868287 + ... + 999182.

Almost surely, 2^122222111112 is an apocalyptic number.

122222111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122222111112 is an abundant number, since it is smaller than the sum of its proper divisors (223502609988).

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

122222111112 is a wasteful number, since it uses less digits than its factorization.

122222111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867588 (or 1867575 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

Adding to 122222111112 its reverse (211111222221), we get a palindrome (333333333333).

The spelling of 122222111112 in words is "one hundred twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, one hundred twelve".