2216261121 has 8 divisors (see below), whose sum is σ = 2955986880. Its totient is φ = 1477021392.

The previous prime is 2216261111. The next prime is 2216261227. The reversal of 2216261121 is 1211626122.

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

It is not a de Polignac number, because 2216261121 - 2⁷ = 2216260993 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2216261091 and 2216261100.

It is not an unprimeable number, because it can be changed into a prime (2216261111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110730 + ... + 129203.

It is an arithmetic number, because the mean of its divisors is an integer number (369498360).

Almost surely, 2^2216261121 is an apocalyptic number.

It is an amenable number.

2216261121 is a deficient number, since it is larger than the sum of its proper divisors (739725759).

2216261121 is a wasteful number, since it uses less digits than its factorization.

2216261121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243015.

The product of its digits is 576, while the sum is 24.

The square root of 2216261121 is about 47077.1825941188. The cubic root of 2216261121 is about 1303.7879893648.

Adding to 2216261121 its reverse (1211626122), we get a palindrome (3427887243).

The spelling of 2216261121 in words is "two billion, two hundred sixteen million, two hundred sixty-one thousand, one hundred twenty-one".