111122222102221 has 4 divisors (see below), whose sum is σ = 121224242293344. Its totient is φ = 101020201911100.

The previous prime is 111122222102209. The next prime is 111122222102231. The reversal of 111122222102221 is 122201222221111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 111122222102221 - 2⁵ = 111122222102189 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111122222102192 and 111122222102201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111122222102231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5051010095545 + ... + 5051010095566.

It is an arithmetic number, because the mean of its divisors is an integer number (30306060573336).

Almost surely, 2^{111122222102221} is an apocalyptic number.

111122222102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111122222102221 is a deficient number, since it is larger than the sum of its proper divisors (10102020191123).

111122222102221 is a wasteful number, since it uses less digits than its factorization.

111122222102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10102020191122.

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

Adding to 111122222102221 its reverse (122201222221111), we get a palindrome (233323444323332).

The spelling of 111122222102221 in words is "one hundred eleven trillion, one hundred twenty-two billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".