2112130345 has 32 divisors (see below), whose sum is σ = 2878041600. Its totient is φ = 1475138304.

The previous prime is 2112130343. The next prime is 2112130351. The reversal of 2112130345 is 5430312112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2112130345 - 2¹ = 2112130343 is a prime.

It is a super-2 number, since 2×2112130345² = 8922189188539638050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112130343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1022784 + ... + 1024846.

It is an arithmetic number, because the mean of its divisors is an integer number (89938800).

Almost surely, 2^2112130345 is an apocalyptic number.

It is an amenable number.

2112130345 is a deficient number, since it is larger than the sum of its proper divisors (765911255).

2112130345 is a wasteful number, since it uses less digits than its factorization.

2112130345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 2112130345 is about 45957.9192849285. The cubic root of 2112130345 is about 1283.0401257775.

Adding to 2112130345 its reverse (5430312112), we get a palindrome (7542442457).

The spelling of 2112130345 in words is "two billion, one hundred twelve million, one hundred thirty thousand, three hundred forty-five".