2111112211 has 16 divisors (see below), whose sum is σ = 2399303200. Its totient is φ = 1841419008.

The previous prime is 2111112191. The next prime is 2111112229. The reversal of 2111112211 is 1122111112.

It is a happy number.

It is not a de Polignac number, because 2111112211 - 2¹³ = 2111104019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2111112191 and 2111112200.

It is not an unprimeable number, because it can be changed into a prime (2111112611) 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, 87295 + ... + 108823.

It is an arithmetic number, because the mean of its divisors is an integer number (149956450).

Almost surely, 2^2111112211 is an apocalyptic number.

2111112211 is a deficient number, since it is larger than the sum of its proper divisors (288190989).

2111112211 is a wasteful number, since it uses less digits than its factorization.

2111112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21958.

The product of its digits is 8, while the sum is 13.

The square root of 2111112211 is about 45946.8411427815. The cubic root of 2111112211 is about 1282.8339332110.

Adding to 2111112211 its reverse (1122111112), we get a palindrome (3233223323).

The spelling of 2111112211 in words is "two billion, one hundred eleven million, one hundred twelve thousand, two hundred eleven".