111112200112221 has 40 divisors (see below), whose sum is σ = 206939124030144. Its totient is φ = 57720623431680.

The previous prime is 111112200112213. The next prime is 111112200112241. The reversal of 111112200112221 is 122211002211111.

It is a happy number.

111112200112221 is a `hidden beast` number, since 1 + 1 + 111 + 220 + 0 + 112 + 221 = 666.

It is not a de Polignac number, because 111112200112221 - 2³ = 111112200112213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111112200112194 and 111112200112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112200112241) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 8907497380 + ... + 8907509853.

Almost surely, 2^{111112200112221} is an apocalyptic number.

111112200112221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111112200112221 is a deficient number, since it is larger than the sum of its proper divisors (95826923917923).

111112200112221 is a wasteful number, since it uses less digits than its factorization.

111112200112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17815007263 (or 17815007254 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111112200112221 its reverse (122211002211111), we get a palindrome (233323202323332).

The spelling of 111112200112221 in words is "one hundred eleven trillion, one hundred twelve billion, two hundred million, one hundred twelve thousand, two hundred twenty-one".