11112111112222 has 4 divisors (see below), whose sum is σ = 16668166668336. Its totient is φ = 5556055556110.

The previous prime is 11112111112211. The next prime is 11112111112241. The reversal of 11112111112222 is 22221111121111.

11112111112222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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

It is a self number, because there is not a number n which added to its sum of digits gives 11112111112222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2778027778054 + ... + 2778027778057.

It is an arithmetic number, because the mean of its divisors is an integer number (4167041667084).

Almost surely, 2^{11112111112222} is an apocalyptic number.

11112111112222 is a deficient number, since it is larger than the sum of its proper divisors (5556055556114).

11112111112222 is an equidigital number, since it uses as much as digits as its factorization.

11112111112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556055556113.

The product of its digits is 32, while the sum is 19.

Adding to 11112111112222 its reverse (22221111121111), we get a palindrome (33333222233333).

The spelling of 11112111112222 in words is "eleven trillion, one hundred twelve billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-two".