2011111222 has 4 divisors (see below), whose sum is σ = 3016666836. Its totient is φ = 1005555610.

The previous prime is 2011111181. The next prime is 2011111231. The reversal of 2011111222 is 2221111102.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502777804 + ... + 502777807.

It is an arithmetic number, because the mean of its divisors is an integer number (754166709).

Almost surely, 2^2011111222 is an apocalyptic number.

2011111222 is a deficient number, since it is larger than the sum of its proper divisors (1005555614).

2011111222 is a wasteful number, since it uses less digits than its factorization.

2011111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005555613.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2011111222 is about 44845.4147265916. The cubic root of 2011111222 is about 1262.2499527931.

Adding to 2011111222 its reverse (2221111102), we get a palindrome (4232222324).

The spelling of 2011111222 in words is "two billion, eleven million, one hundred eleven thousand, two hundred twenty-two".