12111112222222 has 8 divisors (see below), whose sum is σ = 19564104359016. Its totient is φ = 5589744102552.

The previous prime is 12111112222211. The next prime is 12111112222259. The reversal of 12111112222222 is 22222221111121.

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

It is a super-2 number, since 2×12111112222222² (a number of 27 digits) contains 22 as substring.

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 = 12111112222193 and 12111112222202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232906004248 + ... + 232906004299.

It is an arithmetic number, because the mean of its divisors is an integer number (2445513044877).

Almost surely, 2^{12111112222222} is an apocalyptic number.

12111112222222 is a deficient number, since it is larger than the sum of its proper divisors (7452992136794).

12111112222222 is a wasteful number, since it uses less digits than its factorization.

12111112222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465812008562.

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

Adding to 12111112222222 its reverse (22222221111121), we get a palindrome (34333333333343).

The spelling of 12111112222222 in words is "twelve trillion, one hundred eleven billion, one hundred twelve million, two hundred twenty-two thousand, two hundred twenty-two".