2121233112211 has 4 divisors (see below), whose sum is σ = 2123173857232. Its totient is φ = 2119292367192.

The previous prime is 2121233112181. The next prime is 2121233112227. The reversal of 2121233112211 is 1122113321212.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2121233112211 - 2⁵ = 2121233112179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121233112311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 970370871 + ... + 970373056.

It is an arithmetic number, because the mean of its divisors is an integer number (530793464308).

Almost surely, 2^{2121233112211} is an apocalyptic number.

2121233112211 is a deficient number, since it is larger than the sum of its proper divisors (1940745021).

2121233112211 is a wasteful number, since it uses less digits than its factorization.

2121233112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940745020.

The product of its digits is 288, while the sum is 22.

Adding to 2121233112211 its reverse (1122113321212), we get a palindrome (3243346433423).

The spelling of 2121233112211 in words is "two trillion, one hundred twenty-one billion, two hundred thirty-three million, one hundred twelve thousand, two hundred eleven".