2112861812 has 6 divisors (see below), whose sum is σ = 3697508178. Its totient is φ = 1056430904.

The previous prime is 2112861809. The next prime is 2112861827. The reversal of 2112861812 is 2181682112.

It can be written as a sum of positive squares in only one way, i.e., 1770389776 + 342472036 = 42076^2 + 18506^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264107723 + ... + 264107730.

It is an arithmetic number, because the mean of its divisors is an integer number (616251363).

Almost surely, 2^2112861812 is an apocalyptic number.

It is an amenable number.

2112861812 is a deficient number, since it is larger than the sum of its proper divisors (1584646366).

2112861812 is a wasteful number, since it uses less digits than its factorization.

2112861812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528215457 (or 528215455 counting only the distinct ones).

The product of its digits is 3072, while the sum is 32.

The square root of 2112861812 is about 45965.8766042811. The cubic root of 2112861812 is about 1283.1882216238.

The spelling of 2112861812 in words is "two billion, one hundred twelve million, eight hundred sixty-one thousand, eight hundred twelve".