222222011111 has 4 divisors (see below), whose sum is σ = 222365104752. Its totient is φ = 222078917472.

The previous prime is 222222011107. The next prime is 222222011113. The reversal of 222222011111 is 111110222222.

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

It is a cyclic number.

It is not a de Polignac number, because 222222011111 - 2² = 222222011107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 222222011111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222011113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71544491 + ... + 71547596.

It is an arithmetic number, because the mean of its divisors is an integer number (55591276188).

Almost surely, 2^222222011111 is an apocalyptic number.

222222011111 is a deficient number, since it is larger than the sum of its proper divisors (143093641).

222222011111 is a wasteful number, since it uses less digits than its factorization.

222222011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143093640.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222222011111 its reverse (111110222222), we get a palindrome (333332233333).

The spelling of 222222011111 in words is "two hundred twenty-two billion, two hundred twenty-two million, eleven thousand, one hundred eleven".