6812112021 has 16 divisors (see below), whose sum is σ = 10670721600. Its totient is φ = 3810971520.

The previous prime is 6812112017. The next prime is 6812112049. The reversal of 6812112021 is 1202112186.

It is not a de Polignac number, because 6812112021 - 2² = 6812112017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6812111982 and 6812112000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6812112011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7939096 + ... + 7939953.

It is an arithmetic number, because the mean of its divisors is an integer number (666920100).

Almost surely, 2^6812112021 is an apocalyptic number.

It is an amenable number.

6812112021 is a deficient number, since it is larger than the sum of its proper divisors (3858609579).

6812112021 is a wasteful number, since it uses less digits than its factorization.

6812112021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15879076.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 6812112021 is about 82535.5197536188. The cubic root of 6812112021 is about 1895.6606437338.

The spelling of 6812112021 in words is "six billion, eight hundred twelve million, one hundred twelve thousand, twenty-one".