7121165331 has 16 divisors (see below), whose sum is σ = 10862910464. Its totient is φ = 4064883264.

The previous prime is 7121165291. The next prime is 7121165339. The reversal of 7121165331 is 1335611217.

It is not a de Polignac number, because 7121165331 - 2¹⁰ = 7121164307 is a prime.

It is a super-2 number, since 2×7121165331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7121165339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161275 + ... + 200628.

It is an arithmetic number, because the mean of its divisors is an integer number (678931904).

Almost surely, 2^7121165331 is an apocalyptic number.

7121165331 is a deficient number, since it is larger than the sum of its proper divisors (3741745133).

7121165331 is a wasteful number, since it uses less digits than its factorization.

7121165331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362850.

The product of its digits is 3780, while the sum is 30.

The square root of 7121165331 is about 84386.9974048135. The cubic root of 7121165331 is about 1923.9052936780.

Adding to 7121165331 its reverse (1335611217), we get a palindrome (8456776548).

The spelling of 7121165331 in words is "seven billion, one hundred twenty-one million, one hundred sixty-five thousand, three hundred thirty-one".