111160072721 has 16 divisors (see below), whose sum is σ = 114118742400. Its totient is φ = 108243451008.

The previous prime is 111160072703. The next prime is 111160072733. The reversal of 111160072721 is 127270061111.

It is a cyclic number.

It is not a de Polignac number, because 111160072721 - 2¹⁰ = 111160071697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111160072741) 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, 3912515 + ... + 3940823.

It is an arithmetic number, because the mean of its divisors is an integer number (7132421400).

Almost surely, 2^111160072721 is an apocalyptic number.

It is an amenable number.

111160072721 is a deficient number, since it is larger than the sum of its proper divisors (2958669679).

111160072721 is a wasteful number, since it uses less digits than its factorization.

111160072721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29048.

The product of its (nonzero) digits is 1176, while the sum is 29.

The spelling of 111160072721 in words is "one hundred eleven billion, one hundred sixty million, seventy-two thousand, seven hundred twenty-one".