2111422111 has 4 divisors (see below), whose sum is σ = 2184229800. Its totient is φ = 2038614424.

The previous prime is 2111422091. The next prime is 2111422127. The reversal of 2111422111 is 1112241112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111422111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111422171) 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, 36403801 + ... + 36403858.

It is an arithmetic number, because the mean of its divisors is an integer number (546057450).

Almost surely, 2^2111422111 is an apocalyptic number.

2111422111 is a deficient number, since it is larger than the sum of its proper divisors (72807689).

2111422111 is an equidigital number, since it uses as much as digits as its factorization.

2111422111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72807688.

The product of its digits is 32, while the sum is 16.

The square root of 2111422111 is about 45950.2133944991. The cubic root of 2111422111 is about 1282.8967011970.

Adding to 2111422111 its reverse (1112241112), we get a palindrome (3223663223).

The spelling of 2111422111 in words is "two billion, one hundred eleven million, four hundred twenty-two thousand, one hundred eleven".