2112031310220 has 240 divisors, whose sum is σ = 7183073620800. Its totient is φ = 516394704384.

The previous prime is 2112031310203. The next prime is 2112031310321. The reversal of 2112031310220 is 220131302112.

2112031310220 is a `hidden beast` number, since 2 + 1 + 120 + 313 + 10 + 220 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2112031310193 and 2112031310202.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2801409 + ... + 3474471.

It is an arithmetic number, because the mean of its divisors is an integer number (29929473420).

Almost surely, 2^{2112031310220} is an apocalyptic number.

2112031310220 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 2112031310220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3591536810400).

2112031310220 is an abundant number, since it is smaller than the sum of its proper divisors (5071042310580).

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

2112031310220 is a wasteful number, since it uses less digits than its factorization.

2112031310220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673246 (or 673235 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2112031310220 its reverse (220131302112), we get a palindrome (2332162612332).

The spelling of 2112031310220 in words is "two trillion, one hundred twelve billion, thirty-one million, three hundred ten thousand, two hundred twenty".