6812112621 has 4 divisors (see below), whose sum is σ = 9082816832. Its totient is φ = 4541408412.

The previous prime is 6812112613. The next prime is 6812112623. The reversal of 6812112621 is 1262112186.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6812112621 - 2³ = 6812112613 is a prime.

It is a super-2 number, since 2×6812112621² = 92809756722374979282, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6812112623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1135352101 + ... + 1135352106.

It is an arithmetic number, because the mean of its divisors is an integer number (2270704208).

Almost surely, 2^6812112621 is an apocalyptic number.

It is an amenable number.

6812112621 is a deficient number, since it is larger than the sum of its proper divisors (2270704211).

6812112621 is a wasteful number, since it uses less digits than its factorization.

6812112621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2270704210.

The product of its digits is 2304, while the sum is 30.

The square root of 6812112621 is about 82535.5233884174. The cubic root of 6812112621 is about 1895.6606993894.

The spelling of 6812112621 in words is "six billion, eight hundred twelve million, one hundred twelve thousand, six hundred twenty-one".