222222101111 has 4 divisors (see below), whose sum is σ = 222242709000. Its totient is φ = 222201493224.

The previous prime is 222222101107. The next prime is 222222101113. The reversal of 222222101111 is 111101222222.

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 222222101111 - 2² = 222222101107 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 222222101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222101113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10287761 + ... + 10309338.

It is an arithmetic number, because the mean of its divisors is an integer number (55560677250).

Almost surely, 2^222222101111 is an apocalyptic number.

222222101111 is a deficient number, since it is larger than the sum of its proper divisors (20607889).

222222101111 is a wasteful number, since it uses less digits than its factorization.

222222101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20607888.

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

Adding to 222222101111 its reverse (111101222222), we get a palindrome (333323323333).

The spelling of 222222101111 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred one thousand, one hundred eleven".