111112011220221 has 40 divisors (see below), whose sum is σ = 191722686053184. Its totient is φ = 63379400330880.

The previous prime is 111112011220213. The next prime is 111112011220237. The reversal of 111112011220221 is 122022110211111.

It is a happy number.

111112011220221 is a `hidden beast` number, since 1 + 11 + 11 + 201 + 1 + 220 + 221 = 666.

It is not a de Polignac number, because 111112011220221 - 2³ = 111112011220213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111112011220194 and 111112011220203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111112011220201) 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, 3667774225 + ... + 3667804518.

Almost surely, 2^{111112011220221} is an apocalyptic number.

111112011220221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111112011220221 is a deficient number, since it is larger than the sum of its proper divisors (80610674832963).

111112011220221 is a wasteful number, since it uses less digits than its factorization.

111112011220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7335578783 (or 7335578774 counting only the distinct ones).

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

Adding to 111112011220221 its reverse (122022110211111), we get a palindrome (233134121431332).

The spelling of 111112011220221 in words is "one hundred eleven trillion, one hundred twelve billion, eleven million, two hundred twenty thousand, two hundred twenty-one".