2116028221 has 8 divisors (see below), whose sum is σ = 2220796800. Its totient is φ = 2012323632.

The previous prime is 2116028209. The next prime is 2116028249. The reversal of 2116028221 is 1228206112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2116028221 - 2⁹ = 2116027709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2116028521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261921 + ... + 269878.

It is an arithmetic number, because the mean of its divisors is an integer number (277599600).

Almost surely, 2^2116028221 is an apocalyptic number.

It is an amenable number.

2116028221 is a deficient number, since it is larger than the sum of its proper divisors (104768579).

2116028221 is a wasteful number, since it uses less digits than its factorization.

2116028221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531995.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 2116028221 is about 46000.3067489772. The cubic root of 2116028221 is about 1283.8289120052.

The spelling of 2116028221 in words is "two billion, one hundred sixteen million, twenty-eight thousand, two hundred twenty-one".