2112112220120 has 128 divisors (see below), whose sum is σ = 5559016573440. Its totient is φ = 707112806400.

The previous prime is 2112112220107. The next prime is 2112112220137. The reversal of 2112112220120 is 210222112112.

It is a super-2 number, since 2×2112112220120² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46343264 + ... + 46388816.

It is an arithmetic number, because the mean of its divisors is an integer number (43429816980).

Almost surely, 2^{2112112220120} is an apocalyptic number.

2112112220120 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 2112112220120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2779508286720).

2112112220120 is an abundant number, since it is smaller than the sum of its proper divisors (3446904353320).

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

2112112220120 is a wasteful number, since it uses less digits than its factorization.

2112112220120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49465 (or 49461 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 2112112220120 its reverse (210222112112), we get a palindrome (2322334332232).

The spelling of 2112112220120 in words is "two trillion, one hundred twelve billion, one hundred twelve million, two hundred twenty thousand, one hundred twenty".