2112113220 has 48 divisors (see below), whose sum is σ = 6758763648. Its totient is φ = 482768640.

The previous prime is 2112113209. The next prime is 2112113249. The reversal of 2112113220 is 223112112.

It is a super-2 number, since 2×2112113220² = 8922044508197536800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2112113220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2514001 + ... + 2514840.

It is an arithmetic number, because the mean of its divisors is an integer number (140807576).

Almost surely, 2^2112113220 is an apocalyptic number.

2112113220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112113220 is an abundant number, since it is smaller than the sum of its proper divisors (4646650428).

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

2112113220 is a wasteful number, since it uses less digits than its factorization.

2112113220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5028860 (or 5028858 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2112113220 is about 45957.7329728088. The cubic root of 2112113220 is about 1283.0366581693.

Adding to 2112113220 its reverse (223112112), we get a palindrome (2335225332).

The spelling of 2112113220 in words is "two billion, one hundred twelve million, one hundred thirteen thousand, two hundred twenty".