2160771226721 has 4 divisors (see below), whose sum is σ = 2176316343600. Its totient is φ = 2145226109844.

The previous prime is 2160771226697. The next prime is 2160771226727. The reversal of 2160771226721 is 1276221770612.

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 2160771226721 - 2³⁸ = 1885893319777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2160771226727) 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 3 ways as a sum of consecutive naturals, for example, 7772558231 + ... + 7772558508.

It is an arithmetic number, because the mean of its divisors is an integer number (544079085900).

Almost surely, 2^{2160771226721} is an apocalyptic number.

It is an amenable number.

2160771226721 is a deficient number, since it is larger than the sum of its proper divisors (15545116879).

2160771226721 is a wasteful number, since it uses less digits than its factorization.

2160771226721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15545116878.

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 2160771226721 in words is "two trillion, one hundred sixty billion, seven hundred seventy-one million, two hundred twenty-six thousand, seven hundred twenty-one".