111222122122222 has 32 divisors (see below), whose sum is σ = 169933587472512. Its totient is φ = 54583604326944.

The previous prime is 111222122122217. The next prime is 111222122122253. The reversal of 111222122122222 is 222221221222111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 577341988 + ... + 577534600.

It is an arithmetic number, because the mean of its divisors is an integer number (5310424608516).

Almost surely, 2^{111222122122222} is an apocalyptic number.

111222122122222 is a deficient number, since it is larger than the sum of its proper divisors (58711465350290).

111222122122222 is a wasteful number, since it uses less digits than its factorization.

111222122122222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208192.

The product of its digits is 1024, while the sum is 25.

Adding to 111222122122222 its reverse (222221221222111), we get a palindrome (333443343344333).

The spelling of 111222122122222 in words is "one hundred eleven trillion, two hundred twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty-two".