2112532520 has 128 divisors (see below), whose sum is σ = 5697699840. Its totient is φ = 689230080.

The previous prime is 2112532507. The next prime is 2112532529. The reversal of 2112532520 is 252352112.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (2112532529) 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, 1435385 + ... + 1436855.

It is an arithmetic number, because the mean of its divisors is an integer number (44513280).

Almost surely, 2^2112532520 is an apocalyptic number.

2112532520 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 2112532520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848849920).

2112532520 is an abundant number, since it is smaller than the sum of its proper divisors (3585167320).

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

2112532520 is a wasteful number, since it uses less digits than its factorization.

2112532520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1735 (or 1731 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2112532520 is about 45962.2945467260. The cubic root of 2112532520 is about 1283.1215560288.

Adding to 2112532520 its reverse (252352112), we get a palindrome (2364884632).

The spelling of 2112532520 in words is "two billion, one hundred twelve million, five hundred thirty-two thousand, five hundred twenty".