6712812121 has 4 divisors (see below), whose sum is σ = 6772217652. Its totient is φ = 6653406592.

The previous prime is 6712812109. The next prime is 6712812133. The reversal of 6712812121 is 1212182176.

6712812121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6712812109) and next prime (6712812133).

It can be written as a sum of positive squares in 2 ways, for example, as 521482896 + 6191329225 = 22836^2 + 78685^2 .

It is a cyclic number.

It is not a de Polignac number, because 6712812121 - 2⁵ = 6712812089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6712812181) 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, 29702596 + ... + 29702821.

It is an arithmetic number, because the mean of its divisors is an integer number (1693054413).

Almost surely, 2^6712812121 is an apocalyptic number.

It is an amenable number.

6712812121 is a deficient number, since it is larger than the sum of its proper divisors (59405531).

6712812121 is a wasteful number, since it uses less digits than its factorization.

6712812121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59405530.

The product of its digits is 2688, while the sum is 31.

The square root of 6712812121 is about 81931.7528251410. The cubic root of 6712812121 is about 1886.4045303988.

Adding to 6712812121 its reverse (1212182176), we get a palindrome (7924994297).

The spelling of 6712812121 in words is "six billion, seven hundred twelve million, eight hundred twelve thousand, one hundred twenty-one".