2111111222 has 16 divisors (see below), whose sum is σ = 3565983744. Its totient is φ = 928641000.

The previous prime is 2111111213. The next prime is 2111111291. The reversal of 2111111222 is 2221111112.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 2111111197 and 2111111206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1547054 + ... + 1548417.

It is an arithmetic number, because the mean of its divisors is an integer number (222873984).

Almost surely, 2^2111111222 is an apocalyptic number.

2111111222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2111111222 is a deficient number, since it is larger than the sum of its proper divisors (1454872522).

2111111222 is a wasteful number, since it uses less digits than its factorization.

2111111222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095515.

The product of its digits is 16, while the sum is 14.

The square root of 2111111222 is about 45946.8303803429. The cubic root of 2111111222 is about 1282.8337328864.

Adding to 2111111222 its reverse (2221111112), we get a palindrome (4332222334).

It can be divided in two parts, 21111112 and 22, that multiplied together give a palindrome (464444464).

The spelling of 2111111222 in words is "two billion, one hundred eleven million, one hundred eleven thousand, two hundred twenty-two".