2122112222120 has 128 divisors (see below), whose sum is σ = 5282196675840. Its totient is φ = 760814807040.

The previous prime is 2122112222099. The next prime is 2122112222123. The reversal of 2122112222120 is 212222112212.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2122112222092 and 2122112222101.

It is not an unprimeable number, because it can be changed into a prime (2122112222123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94967669 + ... + 94990011.

It is an arithmetic number, because the mean of its divisors is an integer number (41267161530).

Almost surely, 2^{2122112222120} is an apocalyptic number.

2122112222120 is a gapful number since it is divisible by the number (20) 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 2122112222120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2641098337920).

2122112222120 is an abundant number, since it is smaller than the sum of its proper divisors (3160084453720).

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

2122112222120 is a wasteful number, since it uses less digits than its factorization.

2122112222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25395 (or 25391 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 2122112222120 its reverse (212222112212), we get a palindrome (2334334334332).

The spelling of 2122112222120 in words is "two trillion, one hundred twenty-two billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty".