2121211232211 has 16 divisors (see below), whose sum is σ = 2998422391808. Its totient is φ = 1331536255200.

The previous prime is 2121211232209. The next prime is 2121211232221. The reversal of 2121211232211 is 1122321121212.

It is not a de Polignac number, because 2121211232211 - 2¹ = 2121211232209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121211232221) 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, 308222545 + ... + 308229426.

It is an arithmetic number, because the mean of its divisors is an integer number (187401399488).

Almost surely, 2^{2121211232211} is an apocalyptic number.

2121211232211 is a deficient number, since it is larger than the sum of its proper divisors (877211159597).

2121211232211 is a wasteful number, since it uses less digits than its factorization.

2121211232211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616452042.

The product of its digits is 192, while the sum is 21.

Adding to 2121211232211 its reverse (1122321121212), we get a palindrome (3243532353423).

The spelling of 2121211232211 in words is "two trillion, one hundred twenty-one billion, two hundred eleven million, two hundred thirty-two thousand, two hundred eleven".