2122122211 has 8 divisors (see below), whose sum is σ = 2337964848. Its totient is φ = 1910100000.

The previous prime is 2122122137. The next prime is 2122122221. The reversal of 2122122211 is 1122212212.

It is a happy number.

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 2122122211 - 2¹⁹ = 2121597923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122122221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953940 + ... + 956161.

It is an arithmetic number, because the mean of its divisors is an integer number (292245606).

Almost surely, 2^2122122211 is an apocalyptic number.

2122122211 is a deficient number, since it is larger than the sum of its proper divisors (215842637).

2122122211 is a wasteful number, since it uses less digits than its factorization.

2122122211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910213.

The product of its digits is 64, while the sum is 16.

The square root of 2122122211 is about 46066.4977071190. The cubic root of 2122122211 is about 1285.0601719011.

Adding to 2122122211 its reverse (1122212212), we get a palindrome (3244334423).

Subtracting from 2122122211 its reverse (1122212212), we obtain a palindrome (999909999).

The spelling of 2122122211 in words is "two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred eleven".