222222001111 has 4 divisors (see below), whose sum is σ = 242424001224. Its totient is φ = 202020001000.

The previous prime is 222222001109. The next prime is 222222001121. The reversal of 222222001111 is 111100222222.

It is a happy number.

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 222222001111 - 2¹ = 222222001109 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222001121) 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, 10101000040 + ... + 10101000061.

It is an arithmetic number, because the mean of its divisors is an integer number (60606000306).

Almost surely, 2^222222001111 is an apocalyptic number.

222222001111 is a deficient number, since it is larger than the sum of its proper divisors (20202000113).

222222001111 is a wasteful number, since it uses less digits than its factorization.

222222001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202000112.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222222001111 its reverse (111100222222), we get a palindrome (333322223333).

The spelling of 222222001111 in words is "two hundred twenty-two billion, two hundred twenty-two million, one thousand, one hundred eleven".