11111222222222 has 8 divisors (see below), whose sum is σ = 16668017015472. Its totient is φ = 5555216550400.

The previous prime is 11111222222209. The next prime is 11111222222239. The reversal of 11111222222222 is 22222222211111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nude number because it is divisible by every one of its digits.

11111222222222 is a modest number, since divided by 2222222 gives 1111122 as remainder.

It is a plaindrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197245154 + ... + 197301477.

It is an arithmetic number, because the mean of its divisors is an integer number (2083502126934).

Almost surely, 2^{11111222222222} is an apocalyptic number.

11111222222222 is a deficient number, since it is larger than the sum of its proper divisors (5556794793250).

11111222222222 is a wasteful number, since it uses less digits than its factorization.

11111222222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394560714.

The product of its digits is 512, while the sum is 23.

Adding to 11111222222222 its reverse (22222222211111), we get a palindrome (33333444433333).

The spelling of 11111222222222 in words is "eleven trillion, one hundred eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, two hundred twenty-two".