111222212222 has 32 divisors (see below), whose sum is σ = 183865456224. Its totient is φ = 50037712000.

The previous prime is 111222212221. The next prime is 111222212279. The reversal of 111222212222 is 222212222111.

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 = 111222212194 and 111222212203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111222212221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8163488 + ... + 8177100.

It is an arithmetic number, because the mean of its divisors is an integer number (5745795507).

Almost surely, 2^111222212222 is an apocalyptic number.

111222212222 is a deficient number, since it is larger than the sum of its proper divisors (72643244002).

111222212222 is a wasteful number, since it uses less digits than its factorization.

111222212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17404.

The product of its digits is 256, while the sum is 20.

Adding to 111222212222 its reverse (222212222111), we get a palindrome (333434434333).

It can be divided in two parts, 111 and 222212222, that multiplied together give a palindrome (24665556642).

The spelling of 111222212222 in words is "one hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".