222111011111 has 6 divisors (see below), whose sum is σ = 244138549536. Its totient is φ = 201919100900.

The previous prime is 222111011069. The next prime is 222111011141. The reversal of 222111011111 is 111110111222.

It is not a de Polignac number, because 222111011111 - 2¹⁰ = 222111010087 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 (222111011141) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 917813975 + ... + 917814216.

It is an arithmetic number, because the mean of its divisors is an integer number (40689758256).

Almost surely, 2^222111011111 is an apocalyptic number.

222111011111 is a deficient number, since it is larger than the sum of its proper divisors (22027538425).

222111011111 is a wasteful number, since it uses less digits than its factorization.

222111011111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1835628213 (or 1835628202 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 222111011111 its reverse (111110111222), we get a palindrome (333221122333).

The spelling of 222111011111 in words is "two hundred twenty-two billion, one hundred eleven million, eleven thousand, one hundred eleven".