7121871273 has 16 divisors (see below), whose sum is σ = 10693251072. Its totient is φ = 4177050000.

The previous prime is 7121871233. The next prime is 7121871287. The reversal of 7121871273 is 3721781217.

It is not a de Polignac number, because 7121871273 - 2⁸ = 7121871017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7121871203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3479853 + ... + 3481898.

It is an arithmetic number, because the mean of its divisors is an integer number (668328192).

Almost surely, 2^7121871273 is an apocalyptic number.

It is an amenable number.

7121871273 is a deficient number, since it is larger than the sum of its proper divisors (3571379799).

7121871273 is a wasteful number, since it uses less digits than its factorization.

7121871273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6961796.

The product of its digits is 32928, while the sum is 39.

The square root of 7121871273 is about 84391.1800664027. The cubic root of 7121871273 is about 1923.9688657017.

The spelling of 7121871273 in words is "seven billion, one hundred twenty-one million, eight hundred seventy-one thousand, two hundred seventy-three".