122222111222112 has 384 divisors, whose sum is σ = 374165010616320. Its totient is φ = 34560736573440.

The previous prime is 122222111222039. The next prime is 122222111222143. The reversal of 122222111222112 is 211222111222221.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 863634814 + ... + 863776322.

It is an arithmetic number, because the mean of its divisors is an integer number (974388048480).

Almost surely, 2^{122222111222112} is an apocalyptic number.

122222111222112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122222111222112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187082505308160).

122222111222112 is an abundant number, since it is smaller than the sum of its proper divisors (251942899394208).

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

122222111222112 is a wasteful number, since it uses less digits than its factorization.

122222111222112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142426 (or 142418 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

Adding to 122222111222112 its reverse (211222111222221), we get a palindrome (333444222444333).

The spelling of 122222111222112 in words is "one hundred twenty-two trillion, two hundred twenty-two billion, one hundred eleven million, two hundred twenty-two thousand, one hundred twelve".