2112530020 has 24 divisors (see below), whose sum is σ = 4482052344. Its totient is φ = 836299776.

The previous prime is 2112529957. The next prime is 2112530023. The reversal of 2112530020 is 200352112.

It can be written as a sum of positive squares in 4 ways, for example, as 240064036 + 1872465984 = 15494^2 + 43272^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2112529976 and 2112530003.

It is not an unprimeable number, because it can be changed into a prime (2112530023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542527 + ... + 546406.

It is an arithmetic number, because the mean of its divisors is an integer number (186752181).

Almost surely, 2^2112530020 is an apocalyptic number.

2112530020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112530020 is an abundant number, since it is smaller than the sum of its proper divisors (2369522324).

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

2112530020 is a wasteful number, since it uses less digits than its factorization.

2112530020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1089039 (or 1089037 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 2112530020 is about 45962.2673505126. The cubic root of 2112530020 is about 1283.1210498741.

Adding to 2112530020 its reverse (200352112), we get a palindrome (2312882132).

The spelling of 2112530020 in words is "two billion, one hundred twelve million, five hundred thirty thousand, twenty".