2112421312 has 28 divisors (see below), whose sum is σ = 4194252216. Its totient is φ = 1055601920.

The previous prime is 2112421291. The next prime is 2112421327. The reversal of 2112421312 is 2131242112.

It is a self number, because there is not a number n which added to its sum of digits gives 2112421312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115038 + ... + 132130.

It is an arithmetic number, because the mean of its divisors is an integer number (149794722).

Almost surely, 2^2112421312 is an apocalyptic number.

It is an amenable number.

2112421312 is a deficient number, since it is larger than the sum of its proper divisors (2081830904).

2112421312 is a wasteful number, since it uses less digits than its factorization.

2112421312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19036 (or 19026 counting only the distinct ones).

The product of its digits is 192, while the sum is 19.

The square root of 2112421312 is about 45961.0847565634. The cubic root of 2112421312 is about 1283.0990402593.

Adding to 2112421312 its reverse (2131242112), we get a palindrome (4243663424).

It can be divided in two parts, 21124 and 21312, that added together give a square (42436 = 206²).

The spelling of 2112421312 in words is "two billion, one hundred twelve million, four hundred twenty-one thousand, three hundred twelve".