2122211121 has 8 divisors (see below), whose sum is σ = 2895420000. Its totient is φ = 1381904832.

The previous prime is 2122211111. The next prime is 2122211129. The reversal of 2122211121 is 1211122212.

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

It is not a de Polignac number, because 2122211121 - 2⁵ = 2122211089 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2122211121.

It is not an unprimeable number, because it can be changed into a prime (2122211129) 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, 8225496 + ... + 8225753.

It is an arithmetic number, because the mean of its divisors is an integer number (361927500).

Almost surely, 2^2122211121 is an apocalyptic number.

It is an amenable number.

2122211121 is a deficient number, since it is larger than the sum of its proper divisors (773208879).

2122211121 is a wasteful number, since it uses less digits than its factorization.

2122211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16451295.

The product of its digits is 32, while the sum is 15.

The square root of 2122211121 is about 46067.4627150226. The cubic root of 2122211121 is about 1285.0781182606.

Adding to 2122211121 its reverse (1211122212), we get a palindrome (3333333333).

The spelling of 2122211121 in words is "two billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-one".