2112005520 has 120 divisors (see below), whose sum is σ = 7102110912. Its totient is φ = 562464000.

The previous prime is 2112005491. The next prime is 2112005537. The reversal of 2112005520 is 255002112.

2112005520 is a `hidden beast` number, since 2 + 112 + 0 + 0 + 552 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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 = 2112005493 and 2112005502.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 755325 + ... + 758115.

Almost surely, 2^2112005520 is an apocalyptic number.

2112005520 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 2112005520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3551055456).

2112005520 is an abundant number, since it is smaller than the sum of its proper divisors (4990105392).

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

2112005520 is a wasteful number, since it uses less digits than its factorization.

2112005520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3861 (or 3852 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 2112005520 is about 45956.5612290563. The cubic root of 2112005520 is about 1283.0148497745.

Adding to 2112005520 its reverse (255002112), we get a palindrome (2367007632).

The spelling of 2112005520 in words is "two billion, one hundred twelve million, five thousand, five hundred twenty".