11112122122222 has 16 divisors (see below), whose sum is σ = 18214986401712. Its totient is φ = 5042210757120.

The previous prime is 11112122122181. The next prime is 11112122122247. The reversal of 11112122122222 is 22222122121111.

It is a Harshad number since it is a multiple of its sum of digits (22).

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

It is a junction number, because it is equal to n+sod(n) for n = 11112122122193 and 11112122122202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437679213 + ... + 437704600.

It is an arithmetic number, because the mean of its divisors is an integer number (1138436650107).

Almost surely, 2^{11112122122222} is an apocalyptic number.

11112122122222 is a deficient number, since it is larger than the sum of its proper divisors (7102864279490).

11112122122222 is a wasteful number, since it uses less digits than its factorization.

11112122122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875384403.

The product of its digits is 256, while the sum is 22.

Adding to 11112122122222 its reverse (22222122121111), we get a palindrome (33334244243333).

The spelling of 11112122122222 in words is "eleven trillion, one hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".