7065171121 has 4 divisors (see below), whose sum is σ = 7071205744. Its totient is φ = 7059136500.

The previous prime is 7065171103. The next prime is 7065171131. The reversal of 7065171121 is 1211715607.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 7065171121 - 2¹¹ = 7065169073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7065171131) 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, 3015555 + ... + 3017896.

It is an arithmetic number, because the mean of its divisors is an integer number (1767801436).

Almost surely, 2^7065171121 is an apocalyptic number.

It is an amenable number.

7065171121 is a deficient number, since it is larger than the sum of its proper divisors (6034623).

7065171121 is a wasteful number, since it uses less digits than its factorization.

7065171121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6034622.

The product of its (nonzero) digits is 2940, while the sum is 31.

The square root of 7065171121 is about 84054.5722789665. The cubic root of 7065171121 is about 1918.8494192371.

Adding to 7065171121 its reverse (1211715607), we get a palindrome (8276886728).

The spelling of 7065171121 in words is "seven billion, sixty-five million, one hundred seventy-one thousand, one hundred twenty-one".