2160721118 has 4 divisors (see below), whose sum is σ = 3241081680. Its totient is φ = 1080360558.

The previous prime is 2160721103. The next prime is 2160721127. The reversal of 2160721118 is 8111270612.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 540180278 + ... + 540180281.

It is an arithmetic number, because the mean of its divisors is an integer number (810270420).

Almost surely, 2^2160721118 is an apocalyptic number.

2160721118 is a deficient number, since it is larger than the sum of its proper divisors (1080360562).

2160721118 is a wasteful number, since it uses less digits than its factorization.

2160721118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080360561.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 2160721118 is about 46483.5575015510. The cubic root of 2160721118 is about 1292.8046500169.

The spelling of 2160721118 in words is "two billion, one hundred sixty million, seven hundred twenty-one thousand, one hundred eighteen".