2111222211 has 16 divisors (see below), whose sum is σ = 3240249600. Its totient is φ = 1197731808.

The previous prime is 2111222203. The next prime is 2111222251. The reversal of 2111222211 is 1122221112.

It is not a de Polignac number, because 2111222211 - 2³ = 2111222203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2111222251) 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 15 ways as a sum of consecutive naturals, for example, 358716 + ... + 364553.

It is an arithmetic number, because the mean of its divisors is an integer number (202515600).

Almost surely, 2^2111222211 is an apocalyptic number.

2111222211 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2111222211 is a deficient number, since it is larger than the sum of its proper divisors (1129027389).

2111222211 is a wasteful number, since it uses less digits than its factorization.

2111222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723418.

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

The square root of 2111222211 is about 45948.0381626898. The cubic root of 2111222211 is about 1282.8562136123.

Adding to 2111222211 its reverse (1122221112), we get a palindrome (3233443323).

The spelling of 2111222211 in words is "two billion, one hundred eleven million, two hundred twenty-two thousand, two hundred eleven".